Finding the Fourth Proportional to 1,171.23, 1,616.27 and 647.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.23 : 1,616.27 = 647.27 : x
2. Step 2: Convert to fraction form
   1,171.23/1,616.27 = 647.27/x
3. Step 3: Cross multiply
   1,171.23x = 1,616.27 × 647.27
4. Step 4: Simplify right side
   1,171.23x = 1,046,155.00
5. Step 5: Solve for x
   x = 1,046,155.00/1,171.23
6. Step 6: Final answer
   x = 893.21