Finding the Fourth Proportional to 1,444.55, 1,993.44 and 815.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.55 : 1,993.44 = 815.05 : x
2. Step 2: Convert to fraction form
   1,444.55/1,993.44 = 815.05/x
3. Step 3: Cross multiply
   1,444.55x = 1,993.44 × 815.05
4. Step 4: Simplify right side
   1,444.55x = 1,624,749.20
5. Step 5: Solve for x
   x = 1,624,749.20/1,444.55
6. Step 6: Final answer
   x = 1,124.75