Finding the Fourth Proportional to 2,629.89, 3,943.91 and 874.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,629.89 : 3,943.91 = 874.42 : x
2. Step 2: Convert to fraction form
   2,629.89/3,943.91 = 874.42/x
3. Step 3: Cross multiply
   2,629.89x = 3,943.91 × 874.42
4. Step 4: Simplify right side
   2,629.89x = 3,448,626.11
5. Step 5: Solve for x
   x = 3,448,626.11/2,629.89
6. Step 6: Final answer
   x = 1,311.32