Finding the Fourth Proportional to 2,271.84, 3,408.20 and 885.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.84 : 3,408.20 = 885.12 : x
2. Step 2: Convert to fraction form
   2,271.84/3,408.20 = 885.12/x
3. Step 3: Cross multiply
   2,271.84x = 3,408.20 × 885.12
4. Step 4: Simplify right side
   2,271.84x = 3,016,665.98
5. Step 5: Solve for x
   x = 3,016,665.98/2,271.84
6. Step 6: Final answer
   x = 1,327.85