Finding the Fourth Proportional to 1,116.99, 1,544.27 and 909.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.99 : 1,544.27 = 909.23 : x
2. Step 2: Convert to fraction form
   1,116.99/1,544.27 = 909.23/x
3. Step 3: Cross multiply
   1,116.99x = 1,544.27 × 909.23
4. Step 4: Simplify right side
   1,116.99x = 1,404,084.34
5. Step 5: Solve for x
   x = 1,404,084.34/1,116.99
6. Step 6: Final answer
   x = 1,257.02