simple but urgent thanks!

large fund: Amount in fund on 1/1/20: $4,500,000 Amount in fund on 5/1/20 just before transaction: $4,600,000 Transaction: Withdrawal of $800,000 Amount in fund on 8/1/20 just before transaction: $4,000,000 Transaction: Deposit of $400,000 I Amount in fund on 12/13/20: $4,600,000 Calculate the Dollar-Weighted Rate of Return for the fund for the year 2020