Finding the Fourth Proportional to 2,389.24, 3,577.56 and 2,243.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.24 : 3,577.56 = 2,243.20 : x
2. Step 2: Convert to fraction form
   2,389.24/3,577.56 = 2,243.20/x
3. Step 3: Cross multiply
   2,389.24x = 3,577.56 × 2,243.20
4. Step 4: Simplify right side
   2,389.24x = 8,025,182.59
5. Step 5: Solve for x
   x = 8,025,182.59/2,389.24
6. Step 6: Final answer
   x = 3,358.89