Information on four investment proposals is given below: Investment required Present value of cash inflows Net present value Life of the project Investment Proposal D $(150,000) $(80,000) $ (160,000) $ (910,000) 211,800 110,400 241,600 1,214,500 $ 61,800 $ 30,400 $ 81,600 $ 304,500 5 years 7 years 6 years 6 years Required: 1. Compute the project profitability index for each investment proposal. (Round your answers to 2 decimal places.) 2. Rank the proposals in terms of preference. Investment Proposal Project Profitability Index Rank Preference