Finding the Fourth Proportional to 2,020.69, 2,788.53 and 1,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.69 : 2,788.53 = 1,136.50 : x
2. Step 2: Convert to fraction form
   2,020.69/2,788.53 = 1,136.50/x
3. Step 3: Cross multiply
   2,020.69x = 2,788.53 × 1,136.50
4. Step 4: Simplify right side
   2,020.69x = 3,169,164.35
5. Step 5: Solve for x
   x = 3,169,164.35/2,020.69
6. Step 6: Final answer
   x = 1,568.36