Finding the Fourth Proportional to 3,661.01, 5,480.78 and 2,270.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,661.01 : 5,480.78 = 2,270.15 : x
2. Step 2: Convert to fraction form
   3,661.01/5,480.78 = 2,270.15/x
3. Step 3: Cross multiply
   3,661.01x = 5,480.78 × 2,270.15
4. Step 4: Simplify right side
   3,661.01x = 12,442,153.96
5. Step 5: Solve for x
   x = 12,442,153.96/3,661.01
6. Step 6: Final answer
   x = 3,398.56