Finding the Fourth Proportional to 1,251.34, 1,726.89 and 830.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,251.34 : 1,726.89 = 830.96 : x
2. Step 2: Convert to fraction form
   1,251.34/1,726.89 = 830.96/x
3. Step 3: Cross multiply
   1,251.34x = 1,726.89 × 830.96
4. Step 4: Simplify right side
   1,251.34x = 1,434,983.95
5. Step 5: Solve for x
   x = 1,434,983.95/1,251.34
6. Step 6: Final answer
   x = 1,146.76