Finding the Fourth Proportional to 2,274.49, 3,138.42 and 1,279.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.49 : 3,138.42 = 1,279.71 : x
2. Step 2: Convert to fraction form
   2,274.49/3,138.42 = 1,279.71/x
3. Step 3: Cross multiply
   2,274.49x = 3,138.42 × 1,279.71
4. Step 4: Simplify right side
   2,274.49x = 4,016,245.37
5. Step 5: Solve for x
   x = 4,016,245.37/2,274.49
6. Step 6: Final answer
   x = 1,765.78