Finding the Fourth Proportional to 2,279.03, 3,144.95 and 1,284.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.03 : 3,144.95 = 1,284.29 : x
2. Step 2: Convert to fraction form
   2,279.03/3,144.95 = 1,284.29/x
3. Step 3: Cross multiply
   2,279.03x = 3,144.95 × 1,284.29
4. Step 4: Simplify right side
   2,279.03x = 4,039,005.69
5. Step 5: Solve for x
   x = 4,039,005.69/2,279.03
6. Step 6: Final answer
   x = 1,772.25