Finding the Fourth Proportional to 2,839.49, 4,259.38 and 864.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.49 : 4,259.38 = 864.96 : x
2. Step 2: Convert to fraction form
   2,839.49/4,259.38 = 864.96/x
3. Step 3: Cross multiply
   2,839.49x = 4,259.38 × 864.96
4. Step 4: Simplify right side
   2,839.49x = 3,684,191.16
5. Step 5: Solve for x
   x = 3,684,191.16/2,839.49
6. Step 6: Final answer
   x = 1,297.49