Finding the Fourth Proportional to 1,127.82, 1,553.79 and 961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.82 : 1,553.79 = 961.50 : x
2. Step 2: Convert to fraction form
   1,127.82/1,553.79 = 961.50/x
3. Step 3: Cross multiply
   1,127.82x = 1,553.79 × 961.50
4. Step 4: Simplify right side
   1,127.82x = 1,493,969.09
5. Step 5: Solve for x
   x = 1,493,969.09/1,127.82
6. Step 6: Final answer
   x = 1,324.65