Finding the Fourth Proportional to 2,215.32, 3,320.08 and 1,601.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.32 : 3,320.08 = 1,601.08 : x
2. Step 2: Convert to fraction form
   2,215.32/3,320.08 = 1,601.08/x
3. Step 3: Cross multiply
   2,215.32x = 3,320.08 × 1,601.08
4. Step 4: Simplify right side
   2,215.32x = 5,315,713.69
5. Step 5: Solve for x
   x = 5,315,713.69/2,215.32
6. Step 6: Final answer
   x = 2,399.52