Finding the Fourth Proportional to 1,057.34, 1,459.34 and 615.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.34 : 1,459.34 = 615.32 : x
2. Step 2: Convert to fraction form
   1,057.34/1,459.34 = 615.32/x
3. Step 3: Cross multiply
   1,057.34x = 1,459.34 × 615.32
4. Step 4: Simplify right side
   1,057.34x = 897,955.33
5. Step 5: Solve for x
   x = 897,955.33/1,057.34
6. Step 6: Final answer
   x = 849.26