Finding the Fourth Proportional to 1,250.83, 1,726.06 and 691.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.83 : 1,726.06 = 691.30 : x
2. Step 2: Convert to fraction form
   1,250.83/1,726.06 = 691.30/x
3. Step 3: Cross multiply
   1,250.83x = 1,726.06 × 691.30
4. Step 4: Simplify right side
   1,250.83x = 1,193,225.28
5. Step 5: Solve for x
   x = 1,193,225.28/1,250.83
6. Step 6: Final answer
   x = 953.95