Finding the Fourth Proportional to 1,086,780.24, 1,628,049.72 and 711,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086,780.24 : 1,628,049.72 = 711,666 : x
2. Step 2: Convert to fraction form
   1,086,780.24/1,628,049.72 = 711,666/x
3. Step 3: Cross multiply
   1,086,780.24x = 1,628,049.72 × 711,666
4. Step 4: Simplify right side
   1,086,780.24x = 1,158,627,632,033.52
5. Step 5: Solve for x
   x = 1,158,627,632,033.52/1,086,780.24
6. Step 6: Final answer
   x = 1,066,110.32