Finding the Fourth Proportional to 1,173.68, 1,615.98 and 996.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,173.68 : 1,615.98 = 996.27 : x
2. Step 2: Convert to fraction form
   1,173.68/1,615.98 = 996.27/x
3. Step 3: Cross multiply
   1,173.68x = 1,615.98 × 996.27
4. Step 4: Simplify right side
   1,173.68x = 1,609,953.10
5. Step 5: Solve for x
   x = 1,609,953.10/1,173.68
6. Step 6: Final answer
   x = 1,371.72