Finding the Fourth Proportional to 3,720.78, 5,581.71 and 2,241.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,720.78 : 5,581.71 = 2,241.18 : x
2. Step 2: Convert to fraction form
   3,720.78/5,581.71 = 2,241.18/x
3. Step 3: Cross multiply
   3,720.78x = 5,581.71 × 2,241.18
4. Step 4: Simplify right side
   3,720.78x = 12,509,616.82
5. Step 5: Solve for x
   x = 12,509,616.82/3,720.78
6. Step 6: Final answer
   x = 3,362.10