Finding the Fourth Proportional to 1,034.57, 1,427.82 and 615.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.57 : 1,427.82 = 615.02 : x
2. Step 2: Convert to fraction form
   1,034.57/1,427.82 = 615.02/x
3. Step 3: Cross multiply
   1,034.57x = 1,427.82 × 615.02
4. Step 4: Simplify right side
   1,034.57x = 878,137.86
5. Step 5: Solve for x
   x = 878,137.86/1,034.57
6. Step 6: Final answer
   x = 848.80