Finding the Fourth Proportional to 2,300.42, 3,448.55 and 839.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.42 : 3,448.55 = 839.23 : x
2. Step 2: Convert to fraction form
   2,300.42/3,448.55 = 839.23/x
3. Step 3: Cross multiply
   2,300.42x = 3,448.55 × 839.23
4. Step 4: Simplify right side
   2,300.42x = 2,894,120.09
5. Step 5: Solve for x
   x = 2,894,120.09/2,300.42
6. Step 6: Final answer
   x = 1,258.08