Finding the Fourth Proportional to 1,348.72, 1,862.31 and 876.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.72 : 1,862.31 = 876.85 : x
2. Step 2: Convert to fraction form
   1,348.72/1,862.31 = 876.85/x
3. Step 3: Cross multiply
   1,348.72x = 1,862.31 × 876.85
4. Step 4: Simplify right side
   1,348.72x = 1,632,966.52
5. Step 5: Solve for x
   x = 1,632,966.52/1,348.72
6. Step 6: Final answer
   x = 1,210.75