Finding the Fourth Proportional to 613,072.72, 919,598.34 and 275,874.71

Step by Step Solution

1. Step 1: Write the proportion equation
   613,072.72 : 919,598.34 = 275,874.71 : x
2. Step 2: Convert to fraction form
   613,072.72/919,598.34 = 275,874.71/x
3. Step 3: Cross multiply
   613,072.72x = 919,598.34 × 275,874.71
4. Step 4: Simplify right side
   613,072.72x = 253,693,925,363.98
5. Step 5: Solve for x
   x = 253,693,925,363.98/613,072.72
6. Step 6: Final answer
   x = 413,807.23