Finding the Fourth Proportional to 1,171.89, 1,616.94 and 674.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.89 : 1,616.94 = 674.37 : x
2. Step 2: Convert to fraction form
   1,171.89/1,616.94 = 674.37/x
3. Step 3: Cross multiply
   1,171.89x = 1,616.94 × 674.37
4. Step 4: Simplify right side
   1,171.89x = 1,090,415.83
5. Step 5: Solve for x
   x = 1,090,415.83/1,171.89
6. Step 6: Final answer
   x = 930.48