Finding the Fourth Proportional to 2,642.58, 3,963.06 and 2,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.58 : 3,963.06 = 2,268.72 : x
2. Step 2: Convert to fraction form
   2,642.58/3,963.06 = 2,268.72/x
3. Step 3: Cross multiply
   2,642.58x = 3,963.06 × 2,268.72
4. Step 4: Simplify right side
   2,642.58x = 8,991,073.48
5. Step 5: Solve for x
   x = 8,991,073.48/2,642.58
6. Step 6: Final answer
   x = 3,402.38