Finding the Fourth Proportional to 1,237,520.43, 1,707,747.71 and 686,233.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,237,520.43 : 1,707,747.71 = 686,233.09 : x
2. Step 2: Convert to fraction form
   1,237,520.43/1,707,747.71 = 686,233.09/x
3. Step 3: Cross multiply
   1,237,520.43x = 1,707,747.71 × 686,233.09
4. Step 4: Simplify right side
   1,237,520.43x = 1,171,912,976,003.82
5. Step 5: Solve for x
   x = 1,171,912,976,003.82/1,237,520.43
6. Step 6: Final answer
   x = 946,984.75