Finding the Fourth Proportional to 2,133.48, 3,199.86 and 672.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.48 : 3,199.86 = 672.42 : x
2. Step 2: Convert to fraction form
   2,133.48/3,199.86 = 672.42/x
3. Step 3: Cross multiply
   2,133.48x = 3,199.86 × 672.42
4. Step 4: Simplify right side
   2,133.48x = 2,151,649.86
5. Step 5: Solve for x
   x = 2,151,649.86/2,133.48
6. Step 6: Final answer
   x = 1,008.52