Finding the Fourth Proportional to 1,200,109.57, 1,655,370.84 and 769,707.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,109.57 : 1,655,370.84 = 769,707.97 : x
2. Step 2: Convert to fraction form
   1,200,109.57/1,655,370.84 = 769,707.97/x
3. Step 3: Cross multiply
   1,200,109.57x = 1,655,370.84 × 769,707.97
4. Step 4: Simplify right side
   1,200,109.57x = 1,274,152,128,853.59
5. Step 5: Solve for x
   x = 1,274,152,128,853.59/1,200,109.57
6. Step 6: Final answer
   x = 1,061,696.50