Finding the Fourth Proportional to 2,598.60, 3,878.98 and 2,270.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,598.60 : 3,878.98 = 2,270.55 : x
2. Step 2: Convert to fraction form
   2,598.60/3,878.98 = 2,270.55/x
3. Step 3: Cross multiply
   2,598.60x = 3,878.98 × 2,270.55
4. Step 4: Simplify right side
   2,598.60x = 8,807,418.04
5. Step 5: Solve for x
   x = 8,807,418.04/2,598.60
6. Step 6: Final answer
   x = 3,389.29