Finding the Fourth Proportional to 2,598.48, 3,897.90 and 866.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.48 : 3,897.90 = 866.52 : x
2. Step 2: Convert to fraction form
   2,598.48/3,897.90 = 866.52/x
3. Step 3: Cross multiply
   2,598.48x = 3,897.90 × 866.52
4. Step 4: Simplify right side
   2,598.48x = 3,377,608.31
5. Step 5: Solve for x
   x = 3,377,608.31/2,598.48
6. Step 6: Final answer
   x = 1,299.84