Finding the Fourth Proportional to 1,728,908.52, 2,591,589.18 and 663,663.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728,908.52 : 2,591,589.18 = 663,663.72 : x
2. Step 2: Convert to fraction form
   1,728,908.52/2,591,589.18 = 663,663.72/x
3. Step 3: Cross multiply
   1,728,908.52x = 2,591,589.18 × 663,663.72
4. Step 4: Simplify right side
   1,728,908.52x = 1,719,943,715,910.55
5. Step 5: Solve for x
   x = 1,719,943,715,910.55/1,728,908.52
6. Step 6: Final answer
   x = 994,814.76