Finding the Fourth Proportional to 2,020.82, 2,788.70 and 1,136.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.82 : 2,788.70 = 1,136.59 : x
2. Step 2: Convert to fraction form
   2,020.82/2,788.70 = 1,136.59/x
3. Step 3: Cross multiply
   2,020.82x = 2,788.70 × 1,136.59
4. Step 4: Simplify right side
   2,020.82x = 3,169,595.88
5. Step 5: Solve for x
   x = 3,169,595.88/2,020.82
6. Step 6: Final answer
   x = 1,568.47