Finding the Fourth Proportional to 1,196.86, 1,651.65 and 672.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.86 : 1,651.65 = 672.88 : x
2. Step 2: Convert to fraction form
   1,196.86/1,651.65 = 672.88/x
3. Step 3: Cross multiply
   1,196.86x = 1,651.65 × 672.88
4. Step 4: Simplify right side
   1,196.86x = 1,111,353.99
5. Step 5: Solve for x
   x = 1,111,353.99/1,196.86
6. Step 6: Final answer
   x = 928.56