Finding the Fourth Proportional to 1,171.69, 1,616.76 and 995.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,171.69 : 1,616.76 = 995.36 : x
2. Step 2: Convert to fraction form
   1,171.69/1,616.76 = 995.36/x
3. Step 3: Cross multiply
   1,171.69x = 1,616.76 × 995.36
4. Step 4: Simplify right side
   1,171.69x = 1,609,250.15
5. Step 5: Solve for x
   x = 1,609,250.15/1,171.69
6. Step 6: Final answer
   x = 1,373.45