Finding the Fourth Proportional to 1,206,686.59, 1,665,279.83 and 690,602.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,206,686.59 : 1,665,279.83 = 690,602.48 : x
2. Step 2: Convert to fraction form
   1,206,686.59/1,665,279.83 = 690,602.48/x
3. Step 3: Cross multiply
   1,206,686.59x = 1,665,279.83 × 690,602.48
4. Step 4: Simplify right side
   1,206,686.59x = 1,150,046,376,252.25
5. Step 5: Solve for x
   x = 1,150,046,376,252.25/1,206,686.59
6. Step 6: Final answer
   x = 953,061.37