Finding the Fourth Proportional to 2,274.31, 3,138.52 and 1,279.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,274.31 : 3,138.52 = 1,279.59 : x
2. Step 2: Convert to fraction form
   2,274.31/3,138.52 = 1,279.59/x
3. Step 3: Cross multiply
   2,274.31x = 3,138.52 × 1,279.59
4. Step 4: Simplify right side
   2,274.31x = 4,016,012.41
5. Step 5: Solve for x
   x = 4,016,012.41/2,274.31
6. Step 6: Final answer
   x = 1,765.82