Finding the Fourth Proportional to 3,311.55, 4,958.01 and 2,213.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,311.55 : 4,958.01 = 2,213.82 : x
2. Step 2: Convert to fraction form
   3,311.55/4,958.01 = 2,213.82/x
3. Step 3: Cross multiply
   3,311.55x = 4,958.01 × 2,213.82
4. Step 4: Simplify right side
   3,311.55x = 10,976,141.70
5. Step 5: Solve for x
   x = 10,976,141.70/3,311.55
6. Step 6: Final answer
   x = 3,314.50