Finding the Fourth Proportional to 1,196.40, 1,650.98 and 672.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.40 : 1,650.98 = 672.42 : x
2. Step 2: Convert to fraction form
   1,196.40/1,650.98 = 672.42/x
3. Step 3: Cross multiply
   1,196.40x = 1,650.98 × 672.42
4. Step 4: Simplify right side
   1,196.40x = 1,110,151.97
5. Step 5: Solve for x
   x = 1,110,151.97/1,196.40
6. Step 6: Final answer
   x = 927.91