Finding the Fourth Proportional to 1,103.82, 1,522.83 and 661.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.82 : 1,522.83 = 661.76 : x
2. Step 2: Convert to fraction form
   1,103.82/1,522.83 = 661.76/x
3. Step 3: Cross multiply
   1,103.82x = 1,522.83 × 661.76
4. Step 4: Simplify right side
   1,103.82x = 1,007,747.98
5. Step 5: Solve for x
   x = 1,007,747.98/1,103.82
6. Step 6: Final answer
   x = 912.97