Finding the Fourth Proportional to 3,931.42, 5,425.68 and 2,253.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.42 : 5,425.68 = 2,253.37 : x
2. Step 2: Convert to fraction form
   3,931.42/5,425.68 = 2,253.37/x
3. Step 3: Cross multiply
   3,931.42x = 5,425.68 × 2,253.37
4. Step 4: Simplify right side
   3,931.42x = 12,226,064.54
5. Step 5: Solve for x
   x = 12,226,064.54/3,931.42
6. Step 6: Final answer
   x = 3,109.83