Finding the Fourth Proportional to 2,020.22, 3,031.19 and 788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.22 : 3,031.19 = 788.50 : x
2. Step 2: Convert to fraction form
   2,020.22/3,031.19 = 788.50/x
3. Step 3: Cross multiply
   2,020.22x = 3,031.19 × 788.50
4. Step 4: Simplify right side
   2,020.22x = 2,390,074.22
5. Step 5: Solve for x
   x = 2,390,074.22/2,020.22
6. Step 6: Final answer
   x = 1,183.08