Finding the Fourth Proportional to 2,399.42, 3,598.43 and 839.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.42 : 3,598.43 = 839.14 : x
2. Step 2: Convert to fraction form
   2,399.42/3,598.43 = 839.14/x
3. Step 3: Cross multiply
   2,399.42x = 3,598.43 × 839.14
4. Step 4: Simplify right side
   2,399.42x = 3,019,579.65
5. Step 5: Solve for x
   x = 3,019,579.65/2,399.42
6. Step 6: Final answer
   x = 1,258.46