Finding the Fourth Proportional to 1,200,105.57, 1,655,365.32 and 769,703.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,105.57 : 1,655,365.32 = 769,703.97 : x
2. Step 2: Convert to fraction form
   1,200,105.57/1,655,365.32 = 769,703.97/x
3. Step 3: Cross multiply
   1,200,105.57x = 1,655,365.32 × 769,703.97
4. Step 4: Simplify right side
   1,200,105.57x = 1,274,141,258,604.32
5. Step 5: Solve for x
   x = 1,274,141,258,604.32/1,200,105.57
6. Step 6: Final answer
   x = 1,061,690.98