Finding the Fourth Proportional to 1,139,727.52, 1,572,909.38 and 649,708.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,727.52 : 1,572,909.38 = 649,708.72 : x
2. Step 2: Convert to fraction form
   1,139,727.52/1,572,909.38 = 649,708.72/x
3. Step 3: Cross multiply
   1,139,727.52x = 1,572,909.38 × 649,708.72
4. Step 4: Simplify right side
   1,139,727.52x = 1,021,932,939,955.79
5. Step 5: Solve for x
   x = 1,021,932,939,955.79/1,139,727.52
6. Step 6: Final answer
   x = 896,646.72