Finding the Fourth Proportional to 1,013.31, 1,526.85 and 834.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.31 : 1,526.85 = 834.71 : x
2. Step 2: Convert to fraction form
   1,013.31/1,526.85 = 834.71/x
3. Step 3: Cross multiply
   1,013.31x = 1,526.85 × 834.71
4. Step 4: Simplify right side
   1,013.31x = 1,274,469.33
5. Step 5: Solve for x
   x = 1,274,469.33/1,013.31
6. Step 6: Final answer
   x = 1,257.73