Finding the Fourth Proportional to 2,279.08, 3,145.14 and 1,284.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279.08 : 3,145.14 = 1,284.37 : x
2. Step 2: Convert to fraction form
   2,279.08/3,145.14 = 1,284.37/x
3. Step 3: Cross multiply
   2,279.08x = 3,145.14 × 1,284.37
4. Step 4: Simplify right side
   2,279.08x = 4,039,523.46
5. Step 5: Solve for x
   x = 4,039,523.46/2,279.08
6. Step 6: Final answer
   x = 1,772.44