Finding the Fourth Proportional to 2,144.06, 3,213.28 and 1,654.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.06 : 3,213.28 = 1,654.72 : x
2. Step 2: Convert to fraction form
   2,144.06/3,213.28 = 1,654.72/x
3. Step 3: Cross multiply
   2,144.06x = 3,213.28 × 1,654.72
4. Step 4: Simplify right side
   2,144.06x = 5,317,078.68
5. Step 5: Solve for x
   x = 5,317,078.68/2,144.06
6. Step 6: Final answer
   x = 2,479.91