Finding the Fourth Proportional to 3,980.49, 5,492.84 and 2,212.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.49 : 5,492.84 = 2,212.04 : x
2. Step 2: Convert to fraction form
   3,980.49/5,492.84 = 2,212.04/x
3. Step 3: Cross multiply
   3,980.49x = 5,492.84 × 2,212.04
4. Step 4: Simplify right side
   3,980.49x = 12,150,343.27
5. Step 5: Solve for x
   x = 12,150,343.27/3,980.49
6. Step 6: Final answer
   x = 3,052.47