Finding the Fourth Proportional to 671,836.55, 1,007,748.56 and 272,382.37

Step by Step Solution

1. Step 1: Write the proportion equation
   671,836.55 : 1,007,748.56 = 272,382.37 : x
2. Step 2: Convert to fraction form
   671,836.55/1,007,748.56 = 272,382.37/x
3. Step 3: Cross multiply
   671,836.55x = 1,007,748.56 × 272,382.37
4. Step 4: Simplify right side
   671,836.55x = 274,492,939,298.47
5. Step 5: Solve for x
   x = 274,492,939,298.47/671,836.55
6. Step 6: Final answer
   x = 408,571.02