Finding the Fourth Proportional to 2,300.39, 3,450.23 and 839.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.39 : 3,450.23 = 839.54 : x
2. Step 2: Convert to fraction form
   2,300.39/3,450.23 = 839.54/x
3. Step 3: Cross multiply
   2,300.39x = 3,450.23 × 839.54
4. Step 4: Simplify right side
   2,300.39x = 2,896,601.90
5. Step 5: Solve for x
   x = 2,896,601.90/2,300.39
6. Step 6: Final answer
   x = 1,259.18