Finding the Fourth Proportional to 2,744.28, 4,116.06 and 989.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,744.28 : 4,116.06 = 989.10 : x
2. Step 2: Convert to fraction form
   2,744.28/4,116.06 = 989.10/x
3. Step 3: Cross multiply
   2,744.28x = 4,116.06 × 989.10
4. Step 4: Simplify right side
   2,744.28x = 4,071,194.95
5. Step 5: Solve for x
   x = 4,071,194.95/2,744.28
6. Step 6: Final answer
   x = 1,483.52