Finding the Fourth Proportional to 2,217.56, 3,323.46 and 1,384.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,217.56 : 3,323.46 = 1,384.28 : x
2. Step 2: Convert to fraction form
   2,217.56/3,323.46 = 1,384.28/x
3. Step 3: Cross multiply
   2,217.56x = 3,323.46 × 1,384.28
4. Step 4: Simplify right side
   2,217.56x = 4,600,599.21
5. Step 5: Solve for x
   x = 4,600,599.21/2,217.56
6. Step 6: Final answer
   x = 2,074.62