Finding the Fourth Proportional to 2,022.62, 2,791.34 and 1,236.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,022.62 : 2,791.34 = 1,236.80 : x
2. Step 2: Convert to fraction form
   2,022.62/2,791.34 = 1,236.80/x
3. Step 3: Cross multiply
   2,022.62x = 2,791.34 × 1,236.80
4. Step 4: Simplify right side
   2,022.62x = 3,452,329.31
5. Step 5: Solve for x
   x = 3,452,329.31/2,022.62
6. Step 6: Final answer
   x = 1,706.86