Finding the Fourth Proportional to 3,471.28, 5,208.72 and 2,654.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,471.28 : 5,208.72 = 2,654.80 : x
2. Step 2: Convert to fraction form
   3,471.28/5,208.72 = 2,654.80/x
3. Step 3: Cross multiply
   3,471.28x = 5,208.72 × 2,654.80
4. Step 4: Simplify right side
   3,471.28x = 13,828,109.86
5. Step 5: Solve for x
   x = 13,828,109.86/3,471.28
6. Step 6: Final answer
   x = 3,983.58