Finding the Fourth Proportional to 1,444.73, 1,993.61 and 815.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.73 : 1,993.61 = 815.41 : x
2. Step 2: Convert to fraction form
   1,444.73/1,993.61 = 815.41/x
3. Step 3: Cross multiply
   1,444.73x = 1,993.61 × 815.41
4. Step 4: Simplify right side
   1,444.73x = 1,625,606.58
5. Step 5: Solve for x
   x = 1,625,606.58/1,444.73
6. Step 6: Final answer
   x = 1,125.20