Finding the Fourth Proportional to 2,271.24, 3,406.77 and 711.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.24 : 3,406.77 = 711.21 : x
2. Step 2: Convert to fraction form
   2,271.24/3,406.77 = 711.21/x
3. Step 3: Cross multiply
   2,271.24x = 3,406.77 × 711.21
4. Step 4: Simplify right side
   2,271.24x = 2,422,928.89
5. Step 5: Solve for x
   x = 2,422,928.89/2,271.24
6. Step 6: Final answer
   x = 1,066.79