Finding the Fourth Proportional to 2,510.64, 3,464.69 and 1,391.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.64 : 3,464.69 = 1,391.63 : x
2. Step 2: Convert to fraction form
   2,510.64/3,464.69 = 1,391.63/x
3. Step 3: Cross multiply
   2,510.64x = 3,464.69 × 1,391.63
4. Step 4: Simplify right side
   2,510.64x = 4,821,542.26
5. Step 5: Solve for x
   x = 4,821,542.26/2,510.64
6. Step 6: Final answer
   x = 1,920.44