How many known persons are seated in row 3?

Study the following information carefully and answer the given questions below. Certain numbers of persons are seated in four different rows facing north. The rows are numbered 1-4 such that the last row is numbered 1, the row in front of it is numbered 2 and so on. The seats are numbered 1, 2, 3, 4 and so on in ascending order from left to right.  Shahid’s seat number is same as his row number. Shahid is 2nd to the left of Megha . None of the persons are seated to the right of Megha. Rajat and Shahid are seated in consecutive rows. The seat number of Rajat is twice than that of Shahid’s row number. Rajat sits somewhere in front of Shahid. Gaurav sits fourth to the left of Aarti. Both Aarti and Sakshi has same seat number. Aarti sits somewhere to the in front of Sakshi. Row 3 has 5 seats. Row 4 has three seats more than that of row 2. Sonal sits exactly behind Johny. Johny sits third to the left of Naresh who is not an immediate neighbor of Sakshi. Rajat sits at one of the extreme ends. Maximum number of seats are placed in row 4 only