Finding the Fourth Proportional to 1,200,529.69, 1,656,641.15 and 656,637.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,529.69 : 1,656,641.15 = 656,637.37 : x
2. Step 2: Convert to fraction form
   1,200,529.69/1,656,641.15 = 656,637.37/x
3. Step 3: Cross multiply
   1,200,529.69x = 1,656,641.15 × 656,637.37
4. Step 4: Simplify right side
   1,200,529.69x = 1,087,812,479,486.57
5. Step 5: Solve for x
   x = 1,087,812,479,486.57/1,200,529.69
6. Step 6: Final answer
   x = 906,110.44