Finding the Fourth Proportional to 1,240,081.54, 1,711,268.61 and 696,240.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,240,081.54 : 1,711,268.61 = 696,240.25 : x
2. Step 2: Convert to fraction form
   1,240,081.54/1,711,268.61 = 696,240.25/x
3. Step 3: Cross multiply
   1,240,081.54x = 1,711,268.61 × 696,240.25
4. Step 4: Simplify right side
   1,240,081.54x = 1,191,454,083,899.78
5. Step 5: Solve for x
   x = 1,191,454,083,899.78/1,240,081.54
6. Step 6: Final answer
   x = 960,786.89