Finding the Fourth Proportional to 2,720.72, 3,754.68 and 1,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,720.72 : 3,754.68 = 1,478.72 : x
2. Step 2: Convert to fraction form
   2,720.72/3,754.68 = 1,478.72/x
3. Step 3: Cross multiply
   2,720.72x = 3,754.68 × 1,478.72
4. Step 4: Simplify right side
   2,720.72x = 5,552,120.41
5. Step 5: Solve for x
   x = 5,552,120.41/2,720.72
6. Step 6: Final answer
   x = 2,040.68