Finding the Fourth Proportional to 3,920.91, 5,411.10 and 2,242.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.91 : 5,411.10 = 2,242.89 : x
2. Step 2: Convert to fraction form
   3,920.91/5,411.10 = 2,242.89/x
3. Step 3: Cross multiply
   3,920.91x = 5,411.10 × 2,242.89
4. Step 4: Simplify right side
   3,920.91x = 12,136,510.49
5. Step 5: Solve for x
   x = 12,136,510.49/3,920.91
6. Step 6: Final answer
   x = 3,095.33