Finding the Fourth Proportional to 2,271.15, 3,408.56 and 1,284.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,271.15 : 3,408.56 = 1,284.57 : x
2. Step 2: Convert to fraction form
   2,271.15/3,408.56 = 1,284.57/x
3. Step 3: Cross multiply
   2,271.15x = 3,408.56 × 1,284.57
4. Step 4: Simplify right side
   2,271.15x = 4,378,527.50
5. Step 5: Solve for x
   x = 4,378,527.50/2,271.15
6. Step 6: Final answer
   x = 1,927.89