Finding the Fourth Proportional to 2,103.59, 3,151.26 and 1,279.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.59 : 3,151.26 = 1,279.82 : x
2. Step 2: Convert to fraction form
   2,103.59/3,151.26 = 1,279.82/x
3. Step 3: Cross multiply
   2,103.59x = 3,151.26 × 1,279.82
4. Step 4: Simplify right side
   2,103.59x = 4,033,029.82
5. Step 5: Solve for x
   x = 4,033,029.82/2,103.59
6. Step 6: Final answer
   x = 1,917.22