Finding the Fourth Proportional to 997.94, 1,496.29 and 869.15

Step by Step Solution

1. Step 1: Write the proportion equation
   997.94 : 1,496.29 = 869.15 : x
2. Step 2: Convert to fraction form
   997.94/1,496.29 = 869.15/x
3. Step 3: Cross multiply
   997.94x = 1,496.29 × 869.15
4. Step 4: Simplify right side
   997.94x = 1,300,500.45
5. Step 5: Solve for x
   x = 1,300,500.45/997.94
6. Step 6: Final answer
   x = 1,303.19