Finding the Fourth Proportional to 2,399.42, 3,596.99 and 939.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.42 : 3,596.99 = 939.59 : x
2. Step 2: Convert to fraction form
   2,399.42/3,596.99 = 939.59/x
3. Step 3: Cross multiply
   2,399.42x = 3,596.99 × 939.59
4. Step 4: Simplify right side
   2,399.42x = 3,379,673.15
5. Step 5: Solve for x
   x = 3,379,673.15/2,399.42
6. Step 6: Final answer
   x = 1,408.54