Finding the Fourth Proportional to 2,019.38, 3,029.27 and 721.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.38 : 3,029.27 = 721.35 : x
2. Step 2: Convert to fraction form
   2,019.38/3,029.27 = 721.35/x
3. Step 3: Cross multiply
   2,019.38x = 3,029.27 × 721.35
4. Step 4: Simplify right side
   2,019.38x = 2,185,160.31
5. Step 5: Solve for x
   x = 2,185,160.31/2,019.38
6. Step 6: Final answer
   x = 1,082.10