Finding the Fourth Proportional to 1,007,544.72, 1,390,391.70 and 548,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,007,544.72 : 1,390,391.70 = 548,664.72 : x
2. Step 2: Convert to fraction form
   1,007,544.72/1,390,391.70 = 548,664.72/x
3. Step 3: Cross multiply
   1,007,544.72x = 1,390,391.70 × 548,664.72
4. Step 4: Simplify right side
   1,007,544.72x = 762,858,872,770.82
5. Step 5: Solve for x
   x = 762,858,872,770.82/1,007,544.72
6. Step 6: Final answer
   x = 757,146.42