please help and explain what im doing wrong

Information on four investment proposals is given below: Investment required Present value of cash inflows Net present value Life of the project Investment Proposal A B D $(330,000) $(40,000) $(190,000) $(2,380,000) 480,000 56,500 286,700 3,178,500 $ 150,000 $ 16,500 $ 96,700 5 798,500 5 years 7 years 6 years 6 years Required: 1. Compute the profitability index for each investment proposal. (Round your answers to 2 decimal places.) 2. Rank the proposals in terms of preference. Answer is complete but not entirely correct. Investment Proposal Profitability Rank Index Preference 0.45 Second 041 Third 0.51 First 0 34 Fourth B C OS D