Finding the Fourth Proportional to 2,660.22, 3,993.86 and 2,272.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.22 : 3,993.86 = 2,272.71 : x
2. Step 2: Convert to fraction form
   2,660.22/3,993.86 = 2,272.71/x
3. Step 3: Cross multiply
   2,660.22x = 3,993.86 × 2,272.71
4. Step 4: Simplify right side
   2,660.22x = 9,076,885.56
5. Step 5: Solve for x
   x = 9,076,885.56/2,660.22
6. Step 6: Final answer
   x = 3,412.08