Finding the Fourth Proportional to 3,931.37, 5,426.43 and 2,339.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.37 : 5,426.43 = 2,339.14 : x
2. Step 2: Convert to fraction form
   3,931.37/5,426.43 = 2,339.14/x
3. Step 3: Cross multiply
   3,931.37x = 5,426.43 × 2,339.14
4. Step 4: Simplify right side
   3,931.37x = 12,693,171.78
5. Step 5: Solve for x
   x = 12,693,171.78/3,931.37
6. Step 6: Final answer
   x = 3,228.69