Finding the Fourth Proportional to 2,020.71, 2,788.34 and 1,136.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.71 : 2,788.34 = 1,136.46 : x
2. Step 2: Convert to fraction form
   2,020.71/2,788.34 = 1,136.46/x
3. Step 3: Cross multiply
   2,020.71x = 2,788.34 × 1,136.46
4. Step 4: Simplify right side
   2,020.71x = 3,168,836.88
5. Step 5: Solve for x
   x = 3,168,836.88/2,020.71
6. Step 6: Final answer
   x = 1,568.18