Finding the Fourth Proportional to 2,216.58, 3,324.69 and 1,291.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216.58 : 3,324.69 = 1,291.56 : x
2. Step 2: Convert to fraction form
   2,216.58/3,324.69 = 1,291.56/x
3. Step 3: Cross multiply
   2,216.58x = 3,324.69 × 1,291.56
4. Step 4: Simplify right side
   2,216.58x = 4,294,036.62
5. Step 5: Solve for x
   x = 4,294,036.62/2,216.58
6. Step 6: Final answer
   x = 1,937.24