Finding the Fourth Proportional to 2,596.59, 3,892.46 and 864.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,596.59 : 3,892.46 = 864.81 : x
2. Step 2: Convert to fraction form
   2,596.59/3,892.46 = 864.81/x
3. Step 3: Cross multiply
   2,596.59x = 3,892.46 × 864.81
4. Step 4: Simplify right side
   2,596.59x = 3,366,234.01
5. Step 5: Solve for x
   x = 3,366,234.01/2,596.59
6. Step 6: Final answer
   x = 1,296.41