Finding the Fourth Proportional to 869,645.92, 1,200,123.72 and 525,434.08

Step by Step Solution

1. Step 1: Write the proportion equation
   869,645.92 : 1,200,123.72 = 525,434.08 : x
2. Step 2: Convert to fraction form
   869,645.92/1,200,123.72 = 525,434.08/x
3. Step 3: Cross multiply
   869,645.92x = 1,200,123.72 × 525,434.08
4. Step 4: Simplify right side
   869,645.92x = 630,585,902,704.38
5. Step 5: Solve for x
   x = 630,585,902,704.38/869,645.92
6. Step 6: Final answer
   x = 725,106.49