Finding the Fourth Proportional to 2,605.79, 3,909.59 and 1,144.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.79 : 3,909.59 = 1,144.74 : x
2. Step 2: Convert to fraction form
   2,605.79/3,909.59 = 1,144.74/x
3. Step 3: Cross multiply
   2,605.79x = 3,909.59 × 1,144.74
4. Step 4: Simplify right side
   2,605.79x = 4,475,458.33
5. Step 5: Solve for x
   x = 4,475,458.33/2,605.79
6. Step 6: Final answer
   x = 1,717.51