Finding the Fourth Proportional to 1,444.96, 1,993.88 and 815.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.96 : 1,993.88 = 815.56 : x
2. Step 2: Convert to fraction form
   1,444.96/1,993.88 = 815.56/x
3. Step 3: Cross multiply
   1,444.96x = 1,993.88 × 815.56
4. Step 4: Simplify right side
   1,444.96x = 1,626,128.77
5. Step 5: Solve for x
   x = 1,626,128.77/1,444.96
6. Step 6: Final answer
   x = 1,125.38