Explanation:

- Option 1: Raj Singh Dungarpur

- Raj Singh Dungarpur was a former president of the Board of Control for Cricket in India (BCCI) but not associated with founding the IPL.

- Option 2: Sandeep Patil

- He is a former Indian cricketer and has served as a coach and selector but did not found the IPL.

- Option 3: Lalit Modi

- Lalit Modi was indeed the founder and first Chairman and Commissioner of the Indian Premier League. He played a key role in establishing the tournament in 2008.

- Option 4: Jagmohan Dalmiya

- Jagmohan Dalmiya was a significant figure in Indian cricket administration but wasn't responsible for starting the IPL.