Finding the Fourth Proportional to 2,274.27, 3,138.33 and 1,279.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.27 : 3,138.33 = 1,279.36 : x
2. Step 2: Convert to fraction form
   2,274.27/3,138.33 = 1,279.36/x
3. Step 3: Cross multiply
   2,274.27x = 3,138.33 × 1,279.36
4. Step 4: Simplify right side
   2,274.27x = 4,015,052.27
5. Step 5: Solve for x
   x = 4,015,052.27/2,274.27
6. Step 6: Final answer
   x = 1,765.42