Finding the Fourth Proportional to 2,021.16, 3,031.89 and 788.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.16 : 3,031.89 = 788.88 : x
2. Step 2: Convert to fraction form
   2,021.16/3,031.89 = 788.88/x
3. Step 3: Cross multiply
   2,021.16x = 3,031.89 × 788.88
4. Step 4: Simplify right side
   2,021.16x = 2,391,797.38
5. Step 5: Solve for x
   x = 2,391,797.38/2,021.16
6. Step 6: Final answer
   x = 1,183.38