Finding the Fourth Proportional to 2,642.10, 3,951.27 and 2,351.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.10 : 3,951.27 = 2,351.31 : x
2. Step 2: Convert to fraction form
   2,642.10/3,951.27 = 2,351.31/x
3. Step 3: Cross multiply
   2,642.10x = 3,951.27 × 2,351.31
4. Step 4: Simplify right side
   2,642.10x = 9,290,660.66
5. Step 5: Solve for x
   x = 9,290,660.66/2,642.10
6. Step 6: Final answer
   x = 3,516.39