Finding the Fourth Proportional to 1,185.33, 1,777.18 and 636.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.33 : 1,777.18 = 636.96 : x
2. Step 2: Convert to fraction form
   1,185.33/1,777.18 = 636.96/x
3. Step 3: Cross multiply
   1,185.33x = 1,777.18 × 636.96
4. Step 4: Simplify right side
   1,185.33x = 1,131,992.57
5. Step 5: Solve for x
   x = 1,131,992.57/1,185.33
6. Step 6: Final answer
   x = 955.00