Finding the Fourth Proportional to 2,327.82, 3,212.40 and 1,279.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,327.82 : 3,212.40 = 1,279.90 : x
2. Step 2: Convert to fraction form
   2,327.82/3,212.40 = 1,279.90/x
3. Step 3: Cross multiply
   2,327.82x = 3,212.40 × 1,279.90
4. Step 4: Simplify right side
   2,327.82x = 4,111,550.76
5. Step 5: Solve for x
   x = 4,111,550.76/2,327.82
6. Step 6: Final answer
   x = 1,766.27