Finding the Fourth Proportional to 1,443,149.91, 1,991,757.15 and 831,183.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,149.91 : 1,991,757.15 = 831,183.57 : x
2. Step 2: Convert to fraction form
   1,443,149.91/1,991,757.15 = 831,183.57/x
3. Step 3: Cross multiply
   1,443,149.91x = 1,991,757.15 × 831,183.57
4. Step 4: Simplify right side
   1,443,149.91x = 1,655,515,818,510.03
5. Step 5: Solve for x
   x = 1,655,515,818,510.03/1,443,149.91
6. Step 6: Final answer
   x = 1,147,154.43