Finding the Fourth Proportional to 1,200,487.14, 1,656,685.10 and 656,611.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,487.14 : 1,656,685.10 = 656,611.29 : x
2. Step 2: Convert to fraction form
   1,200,487.14/1,656,685.10 = 656,611.29/x
3. Step 3: Cross multiply
   1,200,487.14x = 1,656,685.10 × 656,611.29
4. Step 4: Simplify right side
   1,200,487.14x = 1,087,798,142,276.31
5. Step 5: Solve for x
   x = 1,087,798,142,276.31/1,200,487.14
6. Step 6: Final answer
   x = 906,130.61