Finding the Fourth Proportional to 2,279, 3,144.96 and 1,284.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279 : 3,144.96 = 1,284.38 : x
2. Step 2: Convert to fraction form
   2,279/3,144.96 = 1,284.38/x
3. Step 3: Cross multiply
   2,279x = 3,144.96 × 1,284.38
4. Step 4: Simplify right side
   2,279x = 4,039,323.72
5. Step 5: Solve for x
   x = 4,039,323.72/2,279
6. Step 6: Final answer
   x = 1,772.41