Finding the Fourth Proportional to 1,185.05, 1,633.76 and 886.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.05 : 1,633.76 = 886.73 : x
2. Step 2: Convert to fraction form
   1,185.05/1,633.76 = 886.73/x
3. Step 3: Cross multiply
   1,185.05x = 1,633.76 × 886.73
4. Step 4: Simplify right side
   1,185.05x = 1,448,695.49
5. Step 5: Solve for x
   x = 1,448,695.49/1,185.05
6. Step 6: Final answer
   x = 1,222.48