Finding the Fourth Proportional to 2,597.92, 3,897.42 and 866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,597.92 : 3,897.42 = 866.50 : x
2. Step 2: Convert to fraction form
   2,597.92/3,897.42 = 866.50/x
3. Step 3: Cross multiply
   2,597.92x = 3,897.42 × 866.50
4. Step 4: Simplify right side
   2,597.92x = 3,377,114.43
5. Step 5: Solve for x
   x = 3,377,114.43/2,597.92
6. Step 6: Final answer
   x = 1,299.93