Finding the Fourth Proportional to 2,019.68, 3,016.52 and 1,728.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.68 : 3,016.52 = 1,728.16 : x
2. Step 2: Convert to fraction form
   2,019.68/3,016.52 = 1,728.16/x
3. Step 3: Cross multiply
   2,019.68x = 3,016.52 × 1,728.16
4. Step 4: Simplify right side
   2,019.68x = 5,213,029.20
5. Step 5: Solve for x
   x = 5,213,029.20/2,019.68
6. Step 6: Final answer
   x = 2,581.12