Finding the Fourth Proportional to 2,133.53, 3,200.12 and 672.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.53 : 3,200.12 = 672.69 : x
2. Step 2: Convert to fraction form
   2,133.53/3,200.12 = 672.69/x
3. Step 3: Cross multiply
   2,133.53x = 3,200.12 × 672.69
4. Step 4: Simplify right side
   2,133.53x = 2,152,688.72
5. Step 5: Solve for x
   x = 2,152,688.72/2,133.53
6. Step 6: Final answer
   x = 1,008.98