Finding the Fourth Proportional to 2,576.48, 3,863.46 and 932.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.48 : 3,863.46 = 932.78 : x
2. Step 2: Convert to fraction form
   2,576.48/3,863.46 = 932.78/x
3. Step 3: Cross multiply
   2,576.48x = 3,863.46 × 932.78
4. Step 4: Simplify right side
   2,576.48x = 3,603,758.22
5. Step 5: Solve for x
   x = 3,603,758.22/2,576.48
6. Step 6: Final answer
   x = 1,398.71