Finding the Fourth Proportional to 2,211.94, 3,052.54 and 1,217.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211.94 : 3,052.54 = 1,217.29 : x
2. Step 2: Convert to fraction form
   2,211.94/3,052.54 = 1,217.29/x
3. Step 3: Cross multiply
   2,211.94x = 3,052.54 × 1,217.29
4. Step 4: Simplify right side
   2,211.94x = 3,715,826.42
5. Step 5: Solve for x
   x = 3,715,826.42/2,211.94
6. Step 6: Final answer
   x = 1,679.89