India colts have booked final berth in the on-going Under-19 Tri-series one-day cricket tournament. At Kolkata today, India defeated Bangladesh by four wickets which was their third win in as many matches. After restricting Bangladesh to 222 for 7 in 50 overs, the hosts achieved the victory target of 223 losing six wickets in 48.3 overs. India sealed their place in Sunday's summit clash by obtaining 13 points from three matches. Bangladesh have five points by virtue of a win. In their last league match tomorrow, Bangladesh will take on Afghanistan who are yet to to open their account.