Finding the Fourth Proportional to 1,443,114.25, 1,991,707.85 and 831,147.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,114.25 : 1,991,707.85 = 831,147.91 : x
2. Step 2: Convert to fraction form
   1,443,114.25/1,991,707.85 = 831,147.91/x
3. Step 3: Cross multiply
   1,443,114.25x = 1,991,707.85 × 831,147.91
4. Step 4: Simplify right side
   1,443,114.25x = 1,655,403,816,858.09
5. Step 5: Solve for x
   x = 1,655,403,816,858.09/1,443,114.25
6. Step 6: Final answer
   x = 1,147,105.17