Finding the Fourth Proportional to 1,186.02, 1,636.71 and 662.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186.02 : 1,636.71 = 662.07 : x
2. Step 2: Convert to fraction form
   1,186.02/1,636.71 = 662.07/x
3. Step 3: Cross multiply
   1,186.02x = 1,636.71 × 662.07
4. Step 4: Simplify right side
   1,186.02x = 1,083,616.59
5. Step 5: Solve for x
   x = 1,083,616.59/1,186.02
6. Step 6: Final answer
   x = 913.66