Finding the Fourth Proportional to 1,185.02, 1,635.31 and 661.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.02 : 1,635.31 = 661.14 : x
2. Step 2: Convert to fraction form
   1,185.02/1,635.31 = 661.14/x
3. Step 3: Cross multiply
   1,185.02x = 1,635.31 × 661.14
4. Step 4: Simplify right side
   1,185.02x = 1,081,168.85
5. Step 5: Solve for x
   x = 1,081,168.85/1,185.02
6. Step 6: Final answer
   x = 912.36