Finding the Fourth Proportional to 2,417.69, 3,626.50 and 686.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,417.69 : 3,626.50 = 686.32 : x
2. Step 2: Convert to fraction form
   2,417.69/3,626.50 = 686.32/x
3. Step 3: Cross multiply
   2,417.69x = 3,626.50 × 686.32
4. Step 4: Simplify right side
   2,417.69x = 2,488,939.48
5. Step 5: Solve for x
   x = 2,488,939.48/2,417.69
6. Step 6: Final answer
   x = 1,029.47