Finding the Fourth Proportional to 1,016.54, 1,402.88 and 723.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.54 : 1,402.88 = 723.12 : x
2. Step 2: Convert to fraction form
   1,016.54/1,402.88 = 723.12/x
3. Step 3: Cross multiply
   1,016.54x = 1,402.88 × 723.12
4. Step 4: Simplify right side
   1,016.54x = 1,014,450.59
5. Step 5: Solve for x
   x = 1,014,450.59/1,016.54
6. Step 6: Final answer
   x = 997.94