Finding the Fourth Proportional to 896.72, 1,236.36 and 674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   896.72 : 1,236.36 = 674.72 : x
2. Step 2: Convert to fraction form
   896.72/1,236.36 = 674.72/x
3. Step 3: Cross multiply
   896.72x = 1,236.36 × 674.72
4. Step 4: Simplify right side
   896.72x = 834,196.82
5. Step 5: Solve for x
   x = 834,196.82/896.72
6. Step 6: Final answer
   x = 930.28