Finding the Fourth Proportional to 2,605.56, 3,908.13 and 1,144.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.56 : 3,908.13 = 1,144.72 : x
2. Step 2: Convert to fraction form
   2,605.56/3,908.13 = 1,144.72/x
3. Step 3: Cross multiply
   2,605.56x = 3,908.13 × 1,144.72
4. Step 4: Simplify right side
   2,605.56x = 4,473,714.57
5. Step 5: Solve for x
   x = 4,473,714.57/2,605.56
6. Step 6: Final answer
   x = 1,716.99