Finding the Fourth Proportional to 1,439,031.88, 2,158,171.98 and 427,881.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439,031.88 : 2,158,171.98 = 427,881.56 : x
2. Step 2: Convert to fraction form
   1,439,031.88/2,158,171.98 = 427,881.56/x
3. Step 3: Cross multiply
   1,439,031.88x = 2,158,171.98 × 427,881.56
4. Step 4: Simplify right side
   1,439,031.88x = 923,441,993,550.69
5. Step 5: Solve for x
   x = 923,441,993,550.69/1,439,031.88
6. Step 6: Final answer
   x = 641,710.59