Finding the Fourth Proportional to 1,171.47, 1,616.58 and 674.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.47 : 1,616.58 = 674.16 : x
2. Step 2: Convert to fraction form
   1,171.47/1,616.58 = 674.16/x
3. Step 3: Cross multiply
   1,171.47x = 1,616.58 × 674.16
4. Step 4: Simplify right side
   1,171.47x = 1,089,833.57
5. Step 5: Solve for x
   x = 1,089,833.57/1,171.47
6. Step 6: Final answer
   x = 930.31