Finding the Fourth Proportional to 762,287.89, 1,141,907.32 and 458,514.31

Step by Step Solution

1. Step 1: Write the proportion equation
   762,287.89 : 1,141,907.32 = 458,514.31 : x
2. Step 2: Convert to fraction form
   762,287.89/1,141,907.32 = 458,514.31/x
3. Step 3: Cross multiply
   762,287.89x = 1,141,907.32 × 458,514.31
4. Step 4: Simplify right side
   762,287.89x = 523,580,844,621.18
5. Step 5: Solve for x
   x = 523,580,844,621.18/762,287.89
6. Step 6: Final answer
   x = 686,854.47