Finding the Fourth Proportional to 1,171.63, 1,616.83 and 674.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.63 : 1,616.83 = 674.26 : x
2. Step 2: Convert to fraction form
   1,171.63/1,616.83 = 674.26/x
3. Step 3: Cross multiply
   1,171.63x = 1,616.83 × 674.26
4. Step 4: Simplify right side
   1,171.63x = 1,090,158.07
5. Step 5: Solve for x
   x = 1,090,158.07/1,171.63
6. Step 6: Final answer
   x = 930.46