Finding the Fourth Proportional to 1,140,689.52, 1,574,320.32 and 657,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,689.52 : 1,574,320.32 = 657,162.72 : x
2. Step 2: Convert to fraction form
   1,140,689.52/1,574,320.32 = 657,162.72/x
3. Step 3: Cross multiply
   1,140,689.52x = 1,574,320.32 × 657,162.72
4. Step 4: Simplify right side
   1,140,689.52x = 1,034,584,623,642.47
5. Step 5: Solve for x
   x = 1,034,584,623,642.47/1,140,689.52
6. Step 6: Final answer
   x = 906,981.79