Finding the Fourth Proportional to 825,322.96, 1,138,673.42 and 498,513.88

Step by Step Solution

1. Step 1: Write the proportion equation
   825,322.96 : 1,138,673.42 = 498,513.88 : x
2. Step 2: Convert to fraction form
   825,322.96/1,138,673.42 = 498,513.88/x
3. Step 3: Cross multiply
   825,322.96x = 1,138,673.42 × 498,513.88
4. Step 4: Simplify right side
   825,322.96x = 567,644,499,317.82
5. Step 5: Solve for x
   x = 567,644,499,317.82/825,322.96
6. Step 6: Final answer
   x = 687,784.70