Finding the Fourth Proportional to 2,133.38, 3,200.44 and 672.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.38 : 3,200.44 = 672.42 : x
2. Step 2: Convert to fraction form
   2,133.38/3,200.44 = 672.42/x
3. Step 3: Cross multiply
   2,133.38x = 3,200.44 × 672.42
4. Step 4: Simplify right side
   2,133.38x = 2,152,039.86
5. Step 5: Solve for x
   x = 2,152,039.86/2,133.38
6. Step 6: Final answer
   x = 1,008.75