Finding the Fourth Proportional to 3,970.89, 5,479.46 and 2,202.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.89 : 5,479.46 = 2,202.49 : x
2. Step 2: Convert to fraction form
   3,970.89/5,479.46 = 2,202.49/x
3. Step 3: Cross multiply
   3,970.89x = 5,479.46 × 2,202.49
4. Step 4: Simplify right side
   3,970.89x = 12,068,428.46
5. Step 5: Solve for x
   x = 12,068,428.46/3,970.89
6. Step 6: Final answer
   x = 3,039.23