Finding the Fourth Proportional to 1,186.04, 1,636.89 and 662.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.04 : 1,636.89 = 662.18 : x
2. Step 2: Convert to fraction form
   1,186.04/1,636.89 = 662.18/x
3. Step 3: Cross multiply
   1,186.04x = 1,636.89 × 662.18
4. Step 4: Simplify right side
   1,186.04x = 1,083,915.82
5. Step 5: Solve for x
   x = 1,083,915.82/1,186.04
6. Step 6: Final answer
   x = 913.89