Finding the Fourth Proportional to 2,510.57, 3,464.24 and 1,391.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.57 : 3,464.24 = 1,391.23 : x
2. Step 2: Convert to fraction form
   2,510.57/3,464.24 = 1,391.23/x
3. Step 3: Cross multiply
   2,510.57x = 3,464.24 × 1,391.23
4. Step 4: Simplify right side
   2,510.57x = 4,819,554.62
5. Step 5: Solve for x
   x = 4,819,554.62/2,510.57
6. Step 6: Final answer
   x = 1,919.71