Finding the Fourth Proportional to 1,171.25, 1,616.37 and 647.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.25 : 1,616.37 = 647.27 : x
2. Step 2: Convert to fraction form
   1,171.25/1,616.37 = 647.27/x
3. Step 3: Cross multiply
   1,171.25x = 1,616.37 × 647.27
4. Step 4: Simplify right side
   1,171.25x = 1,046,227.81
5. Step 5: Solve for x
   x = 1,046,227.81/1,171.25
6. Step 6: Final answer
   x = 893.26