Finding the Fourth Proportional to 3,981.54, 5,494.19 and 2,213.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.54 : 5,494.19 = 2,213.18 : x
2. Step 2: Convert to fraction form
   3,981.54/5,494.19 = 2,213.18/x
3. Step 3: Cross multiply
   3,981.54x = 5,494.19 × 2,213.18
4. Step 4: Simplify right side
   3,981.54x = 12,159,592.89
5. Step 5: Solve for x
   x = 12,159,592.89/3,981.54
6. Step 6: Final answer
   x = 3,053.99