Finding the Fourth Proportional to 1,250.96, 1,726.16 and 691.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.96 : 1,726.16 = 691.43 : x
2. Step 2: Convert to fraction form
   1,250.96/1,726.16 = 691.43/x
3. Step 3: Cross multiply
   1,250.96x = 1,726.16 × 691.43
4. Step 4: Simplify right side
   1,250.96x = 1,193,506.72
5. Step 5: Solve for x
   x = 1,193,506.72/1,250.96
6. Step 6: Final answer
   x = 954.08