Finding the Fourth Proportional to 1,049.40, 1,450.17 and 786.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.40 : 1,450.17 = 786.96 : x
2. Step 2: Convert to fraction form
   1,049.40/1,450.17 = 786.96/x
3. Step 3: Cross multiply
   1,049.40x = 1,450.17 × 786.96
4. Step 4: Simplify right side
   1,049.40x = 1,141,225.78
5. Step 5: Solve for x
   x = 1,141,225.78/1,049.40
6. Step 6: Final answer
   x = 1,087.50