Finding the Fourth Proportional to 820,382.72, 1,132,091.52 and 457,786.88

Step by Step Solution

1. Step 1: Write the proportion equation
   820,382.72 : 1,132,091.52 = 457,786.88 : x
2. Step 2: Convert to fraction form
   820,382.72/1,132,091.52 = 457,786.88/x
3. Step 3: Cross multiply
   820,382.72x = 1,132,091.52 × 457,786.88
4. Step 4: Simplify right side
   820,382.72x = 518,256,644,815.26
5. Step 5: Solve for x
   x = 518,256,644,815.26/820,382.72
6. Step 6: Final answer
   x = 631,725.45