Finding the Fourth Proportional to 1,293.30, 1,931.18 and 1,016.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.30 : 1,931.18 = 1,016.28 : x
2. Step 2: Convert to fraction form
   1,293.30/1,931.18 = 1,016.28/x
3. Step 3: Cross multiply
   1,293.30x = 1,931.18 × 1,016.28
4. Step 4: Simplify right side
   1,293.30x = 1,962,619.61
5. Step 5: Solve for x
   x = 1,962,619.61/1,293.30
6. Step 6: Final answer
   x = 1,517.53