Finding the Fourth Proportional to 1,139.31, 1,700.82 and 1,016.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139.31 : 1,700.82 = 1,016.28 : x
2. Step 2: Convert to fraction form
   1,139.31/1,700.82 = 1,016.28/x
3. Step 3: Cross multiply
   1,139.31x = 1,700.82 × 1,016.28
4. Step 4: Simplify right side
   1,139.31x = 1,728,509.35
5. Step 5: Solve for x
   x = 1,728,509.35/1,139.31
6. Step 6: Final answer
   x = 1,517.15