Finding the Fourth Proportional to 2,275.86, 3,140.73 and 1,267.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.86 : 3,140.73 = 1,267.59 : x
2. Step 2: Convert to fraction form
   2,275.86/3,140.73 = 1,267.59/x
3. Step 3: Cross multiply
   2,275.86x = 3,140.73 × 1,267.59
4. Step 4: Simplify right side
   2,275.86x = 3,981,144.52
5. Step 5: Solve for x
   x = 3,981,144.52/2,275.86
6. Step 6: Final answer
   x = 1,749.30