Finding the Fourth Proportional to 2,989.44, 4,480.50 and 2,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,989.44 : 4,480.50 = 2,256.72 : x
2. Step 2: Convert to fraction form
   2,989.44/4,480.50 = 2,256.72/x
3. Step 3: Cross multiply
   2,989.44x = 4,480.50 × 2,256.72
4. Step 4: Simplify right side
   2,989.44x = 10,111,233.96
5. Step 5: Solve for x
   x = 10,111,233.96/2,989.44
6. Step 6: Final answer
   x = 3,382.32