Finding the Fourth Proportional to 2,274.52, 3,138.82 and 1,279.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.52 : 3,138.82 = 1,279.81 : x
2. Step 2: Convert to fraction form
   2,274.52/3,138.82 = 1,279.81/x
3. Step 3: Cross multiply
   2,274.52x = 3,138.82 × 1,279.81
4. Step 4: Simplify right side
   2,274.52x = 4,017,083.49
5. Step 5: Solve for x
   x = 4,017,083.49/2,274.52
6. Step 6: Final answer
   x = 1,766.12