Finding the Fourth Proportional to 2,152.90, 3,229.47 and 672.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.90 : 3,229.47 = 672.33 : x
2. Step 2: Convert to fraction form
   2,152.90/3,229.47 = 672.33/x
3. Step 3: Cross multiply
   2,152.90x = 3,229.47 × 672.33
4. Step 4: Simplify right side
   2,152.90x = 2,171,268.05
5. Step 5: Solve for x
   x = 2,171,268.05/2,152.90
6. Step 6: Final answer
   x = 1,008.53