Finding the Fourth Proportional to 2,740.56, 4,111.20 and 1,644.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,740.56 : 4,111.20 = 1,644.72 : x
2. Step 2: Convert to fraction form
   2,740.56/4,111.20 = 1,644.72/x
3. Step 3: Cross multiply
   2,740.56x = 4,111.20 × 1,644.72
4. Step 4: Simplify right side
   2,740.56x = 6,761,772.86
5. Step 5: Solve for x
   x = 6,761,772.86/2,740.56
6. Step 6: Final answer
   x = 2,467.30