Finding the Fourth Proportional to 2,598.72, 3,895.62 and 866.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.72 : 3,895.62 = 866.13 : x
2. Step 2: Convert to fraction form
   2,598.72/3,895.62 = 866.13/x
3. Step 3: Cross multiply
   2,598.72x = 3,895.62 × 866.13
4. Step 4: Simplify right side
   2,598.72x = 3,374,113.35
5. Step 5: Solve for x
   x = 3,374,113.35/2,598.72
6. Step 6: Final answer
   x = 1,298.38