Finding the Fourth Proportional to 2,280.84, 3,147.75 and 1,286.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.84 : 3,147.75 = 1,286.33 : x
2. Step 2: Convert to fraction form
   2,280.84/3,147.75 = 1,286.33/x
3. Step 3: Cross multiply
   2,280.84x = 3,147.75 × 1,286.33
4. Step 4: Simplify right side
   2,280.84x = 4,049,023.09
5. Step 5: Solve for x
   x = 4,049,023.09/2,280.84
6. Step 6: Final answer
   x = 1,775.23