Finding the Fourth Proportional to 1,185.38, 1,636.16 and 713.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.38 : 1,636.16 = 713.42 : x
2. Step 2: Convert to fraction form
   1,185.38/1,636.16 = 713.42/x
3. Step 3: Cross multiply
   1,185.38x = 1,636.16 × 713.42
4. Step 4: Simplify right side
   1,185.38x = 1,167,257.52
5. Step 5: Solve for x
   x = 1,167,257.52/1,185.38
6. Step 6: Final answer
   x = 984.72