Finding the Fourth Proportional to 2,851.31, 3,912.30 and 2,694.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.31 : 3,912.30 = 2,694.58 : x
2. Step 2: Convert to fraction form
   2,851.31/3,912.30 = 2,694.58/x
3. Step 3: Cross multiply
   2,851.31x = 3,912.30 × 2,694.58
4. Step 4: Simplify right side
   2,851.31x = 10,541,995.55
5. Step 5: Solve for x
   x = 10,541,995.55/2,851.31
6. Step 6: Final answer
   x = 3,697.24