Finding the Fourth Proportional to 613,820.10, 847,114.32 and 372,112.86

Step by Step Solution

1. Step 1: Write the proportion equation
   613,820.10 : 847,114.32 = 372,112.86 : x
2. Step 2: Convert to fraction form
   613,820.10/847,114.32 = 372,112.86/x
3. Step 3: Cross multiply
   613,820.10x = 847,114.32 × 372,112.86
4. Step 4: Simplify right side
   613,820.10x = 315,222,132,362.16
5. Step 5: Solve for x
   x = 315,222,132,362.16/613,820.10
6. Step 6: Final answer
   x = 513,541.56