Finding the Fourth Proportional to 1,171.36, 1,616.72 and 674.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.36 : 1,616.72 = 674.34 : x
2. Step 2: Convert to fraction form
   1,171.36/1,616.72 = 674.34/x
3. Step 3: Cross multiply
   1,171.36x = 1,616.72 × 674.34
4. Step 4: Simplify right side
   1,171.36x = 1,090,218.96
5. Step 5: Solve for x
   x = 1,090,218.96/1,171.36
6. Step 6: Final answer
   x = 930.73