Finding the Fourth Proportional to 1,016.88, 1,404 and 951.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.88 : 1,404 = 951.60 : x
2. Step 2: Convert to fraction form
   1,016.88/1,404 = 951.60/x
3. Step 3: Cross multiply
   1,016.88x = 1,404 × 951.60
4. Step 4: Simplify right side
   1,016.88x = 1,336,046.40
5. Step 5: Solve for x
   x = 1,336,046.40/1,016.88
6. Step 6: Final answer
   x = 1,313.87