Finding the Fourth Proportional to 2,212.27, 3,052.89 and 1,217.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.27 : 3,052.89 = 1,217.54 : x
2. Step 2: Convert to fraction form
   2,212.27/3,052.89 = 1,217.54/x
3. Step 3: Cross multiply
   2,212.27x = 3,052.89 × 1,217.54
4. Step 4: Simplify right side
   2,212.27x = 3,717,000.43
5. Step 5: Solve for x
   x = 3,717,000.43/2,212.27
6. Step 6: Final answer
   x = 1,680.18