Finding the Fourth Proportional to 2,019.93, 3,029.31 and 721.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.93 : 3,029.31 = 721.41 : x
2. Step 2: Convert to fraction form
   2,019.93/3,029.31 = 721.41/x
3. Step 3: Cross multiply
   2,019.93x = 3,029.31 × 721.41
4. Step 4: Simplify right side
   2,019.93x = 2,185,374.53
5. Step 5: Solve for x
   x = 2,185,374.53/2,019.93
6. Step 6: Final answer
   x = 1,081.91