Finding the Fourth Proportional to 2,133.30, 3,200.05 and 672.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.30 : 3,200.05 = 672.57 : x
2. Step 2: Convert to fraction form
   2,133.30/3,200.05 = 672.57/x
3. Step 3: Cross multiply
   2,133.30x = 3,200.05 × 672.57
4. Step 4: Simplify right side
   2,133.30x = 2,152,241.63
5. Step 5: Solve for x
   x = 2,152,241.63/2,133.30
6. Step 6: Final answer
   x = 1,008.88