Finding the Fourth Proportional to 1,171.27, 1,616.31 and 673.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.27 : 1,616.31 = 673.87 : x
2. Step 2: Convert to fraction form
   1,171.27/1,616.31 = 673.87/x
3. Step 3: Cross multiply
   1,171.27x = 1,616.31 × 673.87
4. Step 4: Simplify right side
   1,171.27x = 1,089,182.82
5. Step 5: Solve for x
   x = 1,089,182.82/1,171.27
6. Step 6: Final answer
   x = 929.92