Finding the Fourth Proportional to 1,186.24, 1,636.81 and 662.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.24 : 1,636.81 = 662.29 : x
2. Step 2: Convert to fraction form
   1,186.24/1,636.81 = 662.29/x
3. Step 3: Cross multiply
   1,186.24x = 1,636.81 × 662.29
4. Step 4: Simplify right side
   1,186.24x = 1,084,042.89
5. Step 5: Solve for x
   x = 1,084,042.89/1,186.24
6. Step 6: Final answer
   x = 913.85