Finding the Fourth Proportional to 1,077,939.20, 1,487,553.72 and 648,468.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077,939.20 : 1,487,553.72 = 648,468.56 : x
2. Step 2: Convert to fraction form
   1,077,939.20/1,487,553.72 = 648,468.56/x
3. Step 3: Cross multiply
   1,077,939.20x = 1,487,553.72 × 648,468.56
4. Step 4: Simplify right side
   1,077,939.20x = 964,631,818,731.04
5. Step 5: Solve for x
   x = 964,631,818,731.04/1,077,939.20
6. Step 6: Final answer
   x = 894,885.18