Finding the Fourth Proportional to 2,697.90, 3,724.94 and 2,067.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,697.90 : 3,724.94 = 2,067.31 : x
2. Step 2: Convert to fraction form
   2,697.90/3,724.94 = 2,067.31/x
3. Step 3: Cross multiply
   2,697.90x = 3,724.94 × 2,067.31
4. Step 4: Simplify right side
   2,697.90x = 7,700,605.71
5. Step 5: Solve for x
   x = 7,700,605.71/2,697.90
6. Step 6: Final answer
   x = 2,854.30