Finding the Fourth Proportional to 819,404.88, 1,129,916.52 and 647,036.88

Step by Step Solution

1. Step 1: Write the proportion equation
   819,404.88 : 1,129,916.52 = 647,036.88 : x
2. Step 2: Convert to fraction form
   819,404.88/1,129,916.52 = 647,036.88/x
3. Step 3: Cross multiply
   819,404.88x = 1,129,916.52 × 647,036.88
4. Step 4: Simplify right side
   819,404.88x = 731,097,659,761.26
5. Step 5: Solve for x
   x = 731,097,659,761.26/819,404.88
6. Step 6: Final answer
   x = 892,230.05