Finding the Fourth Proportional to 728,800.04, 1,005,747.76 and 402,124.34

Step by Step Solution

1. Step 1: Write the proportion equation
   728,800.04 : 1,005,747.76 = 402,124.34 : x
2. Step 2: Convert to fraction form
   728,800.04/1,005,747.76 = 402,124.34/x
3. Step 3: Cross multiply
   728,800.04x = 1,005,747.76 × 402,124.34
4. Step 4: Simplify right side
   728,800.04x = 404,435,654,196.48
5. Step 5: Solve for x
   x = 404,435,654,196.48/728,800.04
6. Step 6: Final answer
   x = 554,933.63