Finding the Fourth Proportional to 3,939.34, 5,434.38 and 2,449

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939.34 : 5,434.38 = 2,449 : x
2. Step 2: Convert to fraction form
   3,939.34/5,434.38 = 2,449/x
3. Step 3: Cross multiply
   3,939.34x = 5,434.38 × 2,449
4. Step 4: Simplify right side
   3,939.34x = 13,308,796.62
5. Step 5: Solve for x
   x = 13,308,796.62/3,939.34
6. Step 6: Final answer
   x = 3,378.43