Finding the Fourth Proportional to 2,510.42, 3,464.40 and 1,391.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,510.42 : 3,464.40 = 1,391.38 : x
2. Step 2: Convert to fraction form
   2,510.42/3,464.40 = 1,391.38/x
3. Step 3: Cross multiply
   2,510.42x = 3,464.40 × 1,391.38
4. Step 4: Simplify right side
   2,510.42x = 4,820,276.07
5. Step 5: Solve for x
   x = 4,820,276.07/2,510.42
6. Step 6: Final answer
   x = 1,920.11