Finding the Fourth Proportional to 912,872.73, 1,259,654.61 and 525,814.05

Step by Step Solution

1. Step 1: Write the proportion equation
   912,872.73 : 1,259,654.61 = 525,814.05 : x
2. Step 2: Convert to fraction form
   912,872.73/1,259,654.61 = 525,814.05/x
3. Step 3: Cross multiply
   912,872.73x = 1,259,654.61 × 525,814.05
4. Step 4: Simplify right side
   912,872.73x = 662,344,092,085.27
5. Step 5: Solve for x
   x = 662,344,092,085.27/912,872.73
6. Step 6: Final answer
   x = 725,560.17