Finding the Fourth Proportional to 3,274.60, 4,909.76 and 2,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,274.60 : 4,909.76 = 2,162.72 : x
2. Step 2: Convert to fraction form
   3,274.60/4,909.76 = 2,162.72/x
3. Step 3: Cross multiply
   3,274.60x = 4,909.76 × 2,162.72
4. Step 4: Simplify right side
   3,274.60x = 10,618,436.15
5. Step 5: Solve for x
   x = 10,618,436.15/3,274.60
6. Step 6: Final answer
   x = 3,242.67