Finding the Fourth Proportional to 1,171.24, 1,616.22 and 673.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.24 : 1,616.22 = 673.89 : x
2. Step 2: Convert to fraction form
   1,171.24/1,616.22 = 673.89/x
3. Step 3: Cross multiply
   1,171.24x = 1,616.22 × 673.89
4. Step 4: Simplify right side
   1,171.24x = 1,089,154.50
5. Step 5: Solve for x
   x = 1,089,154.50/1,171.24
6. Step 6: Final answer
   x = 929.92