Finding the Fourth Proportional to 1,154,436.86, 1,592,984.86 and 638,121.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,154,436.86 : 1,592,984.86 = 638,121.02 : x
2. Step 2: Convert to fraction form
   1,154,436.86/1,592,984.86 = 638,121.02/x
3. Step 3: Cross multiply
   1,154,436.86x = 1,592,984.86 × 638,121.02
4. Step 4: Simplify right side
   1,154,436.86x = 1,016,517,123,707.76
5. Step 5: Solve for x
   x = 1,016,517,123,707.76/1,154,436.86
6. Step 6: Final answer
   x = 880,530.72