Finding the Fourth Proportional to 869.02, 1,196.31 and 672.16

Step by Step Solution

1. Step 1: Write the proportion equation
   869.02 : 1,196.31 = 672.16 : x
2. Step 2: Convert to fraction form
   869.02/1,196.31 = 672.16/x
3. Step 3: Cross multiply
   869.02x = 1,196.31 × 672.16
4. Step 4: Simplify right side
   869.02x = 804,111.73
5. Step 5: Solve for x
   x = 804,111.73/869.02
6. Step 6: Final answer
   x = 925.31