Finding the Fourth Proportional to 2,215.33, 3,321.78 and 1,522.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.33 : 3,321.78 = 1,522.18 : x
2. Step 2: Convert to fraction form
   2,215.33/3,321.78 = 1,522.18/x
3. Step 3: Cross multiply
   2,215.33x = 3,321.78 × 1,522.18
4. Step 4: Simplify right side
   2,215.33x = 5,056,347.08
5. Step 5: Solve for x
   x = 5,056,347.08/2,215.33
6. Step 6: Final answer
   x = 2,282.44