Finding the Fourth Proportional to 2,212.21, 3,052.82 and 1,217.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,212.21 : 3,052.82 = 1,217.46 : x
2. Step 2: Convert to fraction form
   2,212.21/3,052.82 = 1,217.46/x
3. Step 3: Cross multiply
   2,212.21x = 3,052.82 × 1,217.46
4. Step 4: Simplify right side
   2,212.21x = 3,716,700.73
5. Step 5: Solve for x
   x = 3,716,700.73/2,212.21
6. Step 6: Final answer
   x = 1,680.08