Finding the Fourth Proportional to 3,981.43, 5,494.57 and 2,213.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,981.43 : 5,494.57 = 2,213.03 : x
2. Step 2: Convert to fraction form
   3,981.43/5,494.57 = 2,213.03/x
3. Step 3: Cross multiply
   3,981.43x = 5,494.57 × 2,213.03
4. Step 4: Simplify right side
   3,981.43x = 12,159,656.45
5. Step 5: Solve for x
   x = 12,159,656.45/3,981.43
6. Step 6: Final answer
   x = 3,054.09