Finding the Fourth Proportional to 2,020.38, 2,788.29 and 1,136.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.38 : 2,788.29 = 1,136.07 : x
2. Step 2: Convert to fraction form
   2,020.38/2,788.29 = 1,136.07/x
3. Step 3: Cross multiply
   2,020.38x = 2,788.29 × 1,136.07
4. Step 4: Simplify right side
   2,020.38x = 3,167,692.62
5. Step 5: Solve for x
   x = 3,167,692.62/2,020.38
6. Step 6: Final answer
   x = 1,567.87