Finding the Fourth Proportional to 1,016.91, 1,403.58 and 722.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.91 : 1,403.58 = 722.27 : x
2. Step 2: Convert to fraction form
   1,016.91/1,403.58 = 722.27/x
3. Step 3: Cross multiply
   1,016.91x = 1,403.58 × 722.27
4. Step 4: Simplify right side
   1,016.91x = 1,013,753.10
5. Step 5: Solve for x
   x = 1,013,753.10/1,016.91
6. Step 6: Final answer
   x = 996.90