Finding the Fourth Proportional to 3,920.61, 5,410.38 and 2,242.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.61 : 5,410.38 = 2,242.18 : x
2. Step 2: Convert to fraction form
   3,920.61/5,410.38 = 2,242.18/x
3. Step 3: Cross multiply
   3,920.61x = 5,410.38 × 2,242.18
4. Step 4: Simplify right side
   3,920.61x = 12,131,024.38
5. Step 5: Solve for x
   x = 12,131,024.38/3,920.61
6. Step 6: Final answer
   x = 3,094.17