Net present value method, present value index, and analysis for a service company

Continental Railroad Company is evaluating three capital investment proposals by using the net present value method. Relevant data related to the proposals are summarized as follows:

$\backslash$table$[[,\backslash$table$[[$Maintenance$],[$Equipment$]],\backslash$table$[[$Ramp$],[$Facilities$]],\backslash$table$[[$Computer$],[$Network$]]],[$Amount to be invested,$$739,502,$$$461,287,$$$218,766$