Finding the Fourth Proportional to 2,254.48, 3,359.03 and 2,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,254.48 : 3,359.03 = 2,128.72 : x
2. Step 2: Convert to fraction form
   2,254.48/3,359.03 = 2,128.72/x
3. Step 3: Cross multiply
   2,254.48x = 3,359.03 × 2,128.72
4. Step 4: Simplify right side
   2,254.48x = 7,150,423.70
5. Step 5: Solve for x
   x = 7,150,423.70/2,254.48
6. Step 6: Final answer
   x = 3,171.65