Finding the Fourth Proportional to 2,371.72, 3,268.04 and 2,016.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,371.72 : 3,268.04 = 2,016.40 : x
2. Step 2: Convert to fraction form
   2,371.72/3,268.04 = 2,016.40/x
3. Step 3: Cross multiply
   2,371.72x = 3,268.04 × 2,016.40
4. Step 4: Simplify right side
   2,371.72x = 6,589,675.86
5. Step 5: Solve for x
   x = 6,589,675.86/2,371.72
6. Step 6: Final answer
   x = 2,778.44