Finding the Fourth Proportional to 723,039.86, 997,854.72 and 400,851.02

Step by Step Solution

1. Step 1: Write the proportion equation
   723,039.86 : 997,854.72 = 400,851.02 : x
2. Step 2: Convert to fraction form
   723,039.86/997,854.72 = 400,851.02/x
3. Step 3: Cross multiply
   723,039.86x = 997,854.72 × 400,851.02
4. Step 4: Simplify right side
   723,039.86x = 399,991,082,323.81
5. Step 5: Solve for x
   x = 399,991,082,323.81/723,039.86
6. Step 6: Final answer
   x = 553,207.51