Finding the Fourth Proportional to 690,322.72, 952,279.98 and 475,089.12

Step by Step Solution

1. Step 1: Write the proportion equation
   690,322.72 : 952,279.98 = 475,089.12 : x
2. Step 2: Convert to fraction form
   690,322.72/952,279.98 = 475,089.12/x
3. Step 3: Cross multiply
   690,322.72x = 952,279.98 × 475,089.12
4. Step 4: Simplify right side
   690,322.72x = 452,417,857,691.82
5. Step 5: Solve for x
   x = 452,417,857,691.82/690,322.72
6. Step 6: Final answer
   x = 655,371.53