Finding the Fourth Proportional to 2,019.39, 3,029.48 and 720.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.39 : 3,029.48 = 720.83 : x
2. Step 2: Convert to fraction form
   2,019.39/3,029.48 = 720.83/x
3. Step 3: Cross multiply
   2,019.39x = 3,029.48 × 720.83
4. Step 4: Simplify right side
   2,019.39x = 2,183,721.32
5. Step 5: Solve for x
   x = 2,183,721.32/2,019.39
6. Step 6: Final answer
   x = 1,081.38