Finding the Fourth Proportional to 1,057.82, 1,460.04 and 615.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.82 : 1,460.04 = 615.78 : x
2. Step 2: Convert to fraction form
   1,057.82/1,460.04 = 615.78/x
3. Step 3: Cross multiply
   1,057.82x = 1,460.04 × 615.78
4. Step 4: Simplify right side
   1,057.82x = 899,063.43
5. Step 5: Solve for x
   x = 899,063.43/1,057.82
6. Step 6: Final answer
   x = 849.92