Finding the Fourth Proportional to 2,033.57, 2,806.52 and 1,287.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,033.57 : 2,806.52 = 1,287.77 : x
2. Step 2: Convert to fraction form
   2,033.57/2,806.52 = 1,287.77/x
3. Step 3: Cross multiply
   2,033.57x = 2,806.52 × 1,287.77
4. Step 4: Simplify right side
   2,033.57x = 3,614,131.79
5. Step 5: Solve for x
   x = 3,614,131.79/2,033.57
6. Step 6: Final answer
   x = 1,777.23