Finding the Fourth Proportional to 1,444.83, 1,993.57 and 855.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.83 : 1,993.57 = 855.55 : x
2. Step 2: Convert to fraction form
   1,444.83/1,993.57 = 855.55/x
3. Step 3: Cross multiply
   1,444.83x = 1,993.57 × 855.55
4. Step 4: Simplify right side
   1,444.83x = 1,705,598.81
5. Step 5: Solve for x
   x = 1,705,598.81/1,444.83
6. Step 6: Final answer
   x = 1,180.48