Finding the Fourth Proportional to 1,444.70, 1,993.69 and 815.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.70 : 1,993.69 = 815.23 : x
2. Step 2: Convert to fraction form
   1,444.70/1,993.69 = 815.23/x
3. Step 3: Cross multiply
   1,444.70x = 1,993.69 × 815.23
4. Step 4: Simplify right side
   1,444.70x = 1,625,308.88
5. Step 5: Solve for x
   x = 1,625,308.88/1,444.70
6. Step 6: Final answer
   x = 1,125.01