Finding the Fourth Proportional to 2,605.34, 3,907.20 and 1,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.34 : 3,907.20 = 1,144.10 : x
2. Step 2: Convert to fraction form
   2,605.34/3,907.20 = 1,144.10/x
3. Step 3: Cross multiply
   2,605.34x = 3,907.20 × 1,144.10
4. Step 4: Simplify right side
   2,605.34x = 4,470,227.52
5. Step 5: Solve for x
   x = 4,470,227.52/2,605.34
6. Step 6: Final answer
   x = 1,715.79