Finding the Fourth Proportional to 2,021.16, 2,788.98 and 1,136.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.16 : 2,788.98 = 1,136.76 : x
2. Step 2: Convert to fraction form
   2,021.16/2,788.98 = 1,136.76/x
3. Step 3: Cross multiply
   2,021.16x = 2,788.98 × 1,136.76
4. Step 4: Simplify right side
   2,021.16x = 3,170,400.90
5. Step 5: Solve for x
   x = 3,170,400.90/2,021.16
6. Step 6: Final answer
   x = 1,568.60