Finding the Fourth Proportional to 2,020.25, 3,028.53 and 721.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.25 : 3,028.53 = 721.41 : x
2. Step 2: Convert to fraction form
   2,020.25/3,028.53 = 721.41/x
3. Step 3: Cross multiply
   2,020.25x = 3,028.53 × 721.41
4. Step 4: Simplify right side
   2,020.25x = 2,184,811.83
5. Step 5: Solve for x
   x = 2,184,811.83/2,020.25
6. Step 6: Final answer
   x = 1,081.46