Finding the Fourth Proportional to 3,131.43, 4,701.24 and 2,647.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.43 : 4,701.24 = 2,647.55 : x
2. Step 2: Convert to fraction form
   3,131.43/4,701.24 = 2,647.55/x
3. Step 3: Cross multiply
   3,131.43x = 4,701.24 × 2,647.55
4. Step 4: Simplify right side
   3,131.43x = 12,446,779.72
5. Step 5: Solve for x
   x = 12,446,779.72/3,131.43
6. Step 6: Final answer
   x = 3,974.80