Finding the Fourth Proportional to 2,597.48, 3,895.58 and 865.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,597.48 : 3,895.58 = 865.88 : x
2. Step 2: Convert to fraction form
   2,597.48/3,895.58 = 865.88/x
3. Step 3: Cross multiply
   2,597.48x = 3,895.58 × 865.88
4. Step 4: Simplify right side
   2,597.48x = 3,373,104.81
5. Step 5: Solve for x
   x = 3,373,104.81/2,597.48
6. Step 6: Final answer
   x = 1,298.61