Finding the Fourth Proportional to 2,020.87, 3,029.82 and 788.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.87 : 3,029.82 = 788.05 : x
2. Step 2: Convert to fraction form
   2,020.87/3,029.82 = 788.05/x
3. Step 3: Cross multiply
   2,020.87x = 3,029.82 × 788.05
4. Step 4: Simplify right side
   2,020.87x = 2,387,649.65
5. Step 5: Solve for x
   x = 2,387,649.65/2,020.87
6. Step 6: Final answer
   x = 1,181.50