Finding the Fourth Proportional to 2,076.93, 2,865.94 and 1,280.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.93 : 2,865.94 = 1,280.12 : x
2. Step 2: Convert to fraction form
   2,076.93/2,865.94 = 1,280.12/x
3. Step 3: Cross multiply
   2,076.93x = 2,865.94 × 1,280.12
4. Step 4: Simplify right side
   2,076.93x = 3,668,729.58
5. Step 5: Solve for x
   x = 3,668,729.58/2,076.93
6. Step 6: Final answer
   x = 1,766.42