Finding the Fourth Proportional to 2,510.81, 3,464.94 and 1,391.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.81 : 3,464.94 = 1,391.76 : x
2. Step 2: Convert to fraction form
   2,510.81/3,464.94 = 1,391.76/x
3. Step 3: Cross multiply
   2,510.81x = 3,464.94 × 1,391.76
4. Step 4: Simplify right side
   2,510.81x = 4,822,364.89
5. Step 5: Solve for x
   x = 4,822,364.89/2,510.81
6. Step 6: Final answer
   x = 1,920.64