Finding the Fourth Proportional to 1,011.59, 1,396.15 and 949.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011.59 : 1,396.15 = 949.05 : x
2. Step 2: Convert to fraction form
   1,011.59/1,396.15 = 949.05/x
3. Step 3: Cross multiply
   1,011.59x = 1,396.15 × 949.05
4. Step 4: Simplify right side
   1,011.59x = 1,325,016.16
5. Step 5: Solve for x
   x = 1,325,016.16/1,011.59
6. Step 6: Final answer
   x = 1,309.84