Finding the Fourth Proportional to 3,970.58, 5,479.83 and 2,202.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,970.58 : 5,479.83 = 2,202.62 : x
2. Step 2: Convert to fraction form
   3,970.58/5,479.83 = 2,202.62/x
3. Step 3: Cross multiply
   3,970.58x = 5,479.83 × 2,202.62
4. Step 4: Simplify right side
   3,970.58x = 12,069,983.15
5. Step 5: Solve for x
   x = 12,069,983.15/3,970.58
6. Step 6: Final answer
   x = 3,039.85