Finding the Fourth Proportional to 2,939.39, 4,408.24 and 964.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,939.39 : 4,408.24 = 964.31 : x
2. Step 2: Convert to fraction form
   2,939.39/4,408.24 = 964.31/x
3. Step 3: Cross multiply
   2,939.39x = 4,408.24 × 964.31
4. Step 4: Simplify right side
   2,939.39x = 4,250,909.91
5. Step 5: Solve for x
   x = 4,250,909.91/2,939.39
6. Step 6: Final answer
   x = 1,446.19