Finding the Fourth Proportional to 2,150.32, 3,229.58 and 1,330.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.32 : 3,229.58 = 1,330.20 : x
2. Step 2: Convert to fraction form
   2,150.32/3,229.58 = 1,330.20/x
3. Step 3: Cross multiply
   2,150.32x = 3,229.58 × 1,330.20
4. Step 4: Simplify right side
   2,150.32x = 4,295,987.32
5. Step 5: Solve for x
   x = 4,295,987.32/2,150.32
6. Step 6: Final answer
   x = 1,997.84