Finding the Fourth Proportional to 2,020.89, 2,788.72 and 1,136.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.89 : 2,788.72 = 1,136.67 : x
2. Step 2: Convert to fraction form
   2,020.89/2,788.72 = 1,136.67/x
3. Step 3: Cross multiply
   2,020.89x = 2,788.72 × 1,136.67
4. Step 4: Simplify right side
   2,020.89x = 3,169,854.36
5. Step 5: Solve for x
   x = 3,169,854.36/2,020.89
6. Step 6: Final answer
   x = 1,568.54