Finding the Fourth Proportional to 2,576.80, 3,862.59 and 932.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.80 : 3,862.59 = 932.86 : x
2. Step 2: Convert to fraction form
   2,576.80/3,862.59 = 932.86/x
3. Step 3: Cross multiply
   2,576.80x = 3,862.59 × 932.86
4. Step 4: Simplify right side
   2,576.80x = 3,603,255.71
5. Step 5: Solve for x
   x = 3,603,255.71/2,576.80
6. Step 6: Final answer
   x = 1,398.35