Finding the Fourth Proportional to 658,978.38, 909,378.10 and 372,498.47

Step by Step Solution

1. Step 1: Write the proportion equation
   658,978.38 : 909,378.10 = 372,498.47 : x
2. Step 2: Convert to fraction form
   658,978.38/909,378.10 = 372,498.47/x
3. Step 3: Cross multiply
   658,978.38x = 909,378.10 × 372,498.47
4. Step 4: Simplify right side
   658,978.38x = 338,741,944,492.12
5. Step 5: Solve for x
   x = 338,741,944,492.12/658,978.38
6. Step 6: Final answer
   x = 514,041.06