Finding the Fourth Proportional to 3,146.72, 4,721.61 and 2,228.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,146.72 : 4,721.61 = 2,228.18 : x
2. Step 2: Convert to fraction form
   3,146.72/4,721.61 = 2,228.18/x
3. Step 3: Cross multiply
   3,146.72x = 4,721.61 × 2,228.18
4. Step 4: Simplify right side
   3,146.72x = 10,520,581.72
5. Step 5: Solve for x
   x = 10,520,581.72/3,146.72
6. Step 6: Final answer
   x = 3,343.35