Finding the Fourth Proportional to 2,744.86, 4,116.30 and 989.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,744.86 : 4,116.30 = 989.39 : x
2. Step 2: Convert to fraction form
   2,744.86/4,116.30 = 989.39/x
3. Step 3: Cross multiply
   2,744.86x = 4,116.30 × 989.39
4. Step 4: Simplify right side
   2,744.86x = 4,072,626.06
5. Step 5: Solve for x
   x = 4,072,626.06/2,744.86
6. Step 6: Final answer
   x = 1,483.73