Finding the Fourth Proportional to 2,133.04, 3,200.05 and 672.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.04 : 3,200.05 = 672.15 : x
2. Step 2: Convert to fraction form
   2,133.04/3,200.05 = 672.15/x
3. Step 3: Cross multiply
   2,133.04x = 3,200.05 × 672.15
4. Step 4: Simplify right side
   2,133.04x = 2,150,913.61
5. Step 5: Solve for x
   x = 2,150,913.61/2,133.04
6. Step 6: Final answer
   x = 1,008.38