Finding the Fourth Proportional to 2,510.70, 3,464.72 and 1,391.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.70 : 3,464.72 = 1,391.63 : x
2. Step 2: Convert to fraction form
   2,510.70/3,464.72 = 1,391.63/x
3. Step 3: Cross multiply
   2,510.70x = 3,464.72 × 1,391.63
4. Step 4: Simplify right side
   2,510.70x = 4,821,608.29
5. Step 5: Solve for x
   x = 4,821,608.29/2,510.70
6. Step 6: Final answer
   x = 1,920.42