Finding the Fourth Proportional to 1,259,131.34, 1,737,550.62 and 686,159.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,259,131.34 : 1,737,550.62 = 686,159.18 : x
2. Step 2: Convert to fraction form
   1,259,131.34/1,737,550.62 = 686,159.18/x
3. Step 3: Cross multiply
   1,259,131.34x = 1,737,550.62 × 686,159.18
4. Step 4: Simplify right side
   1,259,131.34x = 1,192,236,308,627.69
5. Step 5: Solve for x
   x = 1,192,236,308,627.69/1,259,131.34
6. Step 6: Final answer
   x = 946,872.08