Finding the Fourth Proportional to 3,321.42, 4,584.27 and 2,274.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,321.42 : 4,584.27 = 2,274.78 : x
2. Step 2: Convert to fraction form
   3,321.42/4,584.27 = 2,274.78/x
3. Step 3: Cross multiply
   3,321.42x = 4,584.27 × 2,274.78
4. Step 4: Simplify right side
   3,321.42x = 10,428,205.71
5. Step 5: Solve for x
   x = 10,428,205.71/3,321.42
6. Step 6: Final answer
   x = 3,139.68