Finding the Fourth Proportional to 2,660.46, 3,990.18 and 1,016.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.46 : 3,990.18 = 1,016.62 : x
2. Step 2: Convert to fraction form
   2,660.46/3,990.18 = 1,016.62/x
3. Step 3: Cross multiply
   2,660.46x = 3,990.18 × 1,016.62
4. Step 4: Simplify right side
   2,660.46x = 4,056,501.78
5. Step 5: Solve for x
   x = 4,056,501.78/2,660.46
6. Step 6: Final answer
   x = 1,524.73