Finding the Fourth Proportional to 2,271.96, 3,408.34 and 886.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.96 : 3,408.34 = 886.05 : x
2. Step 2: Convert to fraction form
   2,271.96/3,408.34 = 886.05/x
3. Step 3: Cross multiply
   2,271.96x = 3,408.34 × 886.05
4. Step 4: Simplify right side
   2,271.96x = 3,019,955.23
5. Step 5: Solve for x
   x = 3,019,955.23/2,271.96
6. Step 6: Final answer
   x = 1,329.23