Finding the Fourth Proportional to 2,016.28, 3,025.08 and 989.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.28 : 3,025.08 = 989.56 : x
2. Step 2: Convert to fraction form
   2,016.28/3,025.08 = 989.56/x
3. Step 3: Cross multiply
   2,016.28x = 3,025.08 × 989.56
4. Step 4: Simplify right side
   2,016.28x = 2,993,498.16
5. Step 5: Solve for x
   x = 2,993,498.16/2,016.28
6. Step 6: Final answer
   x = 1,484.66