Finding the Fourth Proportional to 1,196.64, 1,651.23 and 672.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,196.64 : 1,651.23 = 672.57 : x
2. Step 2: Convert to fraction form
   1,196.64/1,651.23 = 672.57/x
3. Step 3: Cross multiply
   1,196.64x = 1,651.23 × 672.57
4. Step 4: Simplify right side
   1,196.64x = 1,110,567.76
5. Step 5: Solve for x
   x = 1,110,567.76/1,196.64
6. Step 6: Final answer
   x = 928.07