Finding the Fourth Proportional to 2,760.52, 4,140.32 and 1,279.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,760.52 : 4,140.32 = 1,279.68 : x
2. Step 2: Convert to fraction form
   2,760.52/4,140.32 = 1,279.68/x
3. Step 3: Cross multiply
   2,760.52x = 4,140.32 × 1,279.68
4. Step 4: Simplify right side
   2,760.52x = 5,298,285.43
5. Step 5: Solve for x
   x = 5,298,285.43/2,760.52
6. Step 6: Final answer
   x = 1,919.31