Information on four investment proposals is given below: Investment Proposal A B C D Investment required $ (190,000 ) $ (180,000 ) $ (170,000 ) $ (900,000 ) Present value of cash inflows 267,400 249,400 259,300 1,197,500 Net present value $ 77,400 $ 69,400 $ 89,300 $ 297,500 Life of the project 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.