Finding the Fourth Proportional to 655,259.78, 904,287.60 and 368,798.42

Step by Step Solution

1. Step 1: Write the proportion equation
   655,259.78 : 904,287.60 = 368,798.42 : x
2. Step 2: Convert to fraction form
   655,259.78/904,287.60 = 368,798.42/x
3. Step 3: Cross multiply
   655,259.78x = 904,287.60 × 368,798.42
4. Step 4: Simplify right side
   655,259.78x = 333,499,838,105.59
5. Step 5: Solve for x
   x = 333,499,838,105.59/655,259.78
6. Step 6: Final answer
   x = 508,958.20