Finding the Fourth Proportional to 2,004.69, 2,766.78 and 1,218.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,004.69 : 2,766.78 = 1,218.59 : x
2. Step 2: Convert to fraction form
   2,004.69/2,766.78 = 1,218.59/x
3. Step 3: Cross multiply
   2,004.69x = 2,766.78 × 1,218.59
4. Step 4: Simplify right side
   2,004.69x = 3,371,550.51
5. Step 5: Solve for x
   x = 3,371,550.51/2,004.69
6. Step 6: Final answer
   x = 1,681.83