Finding the Fourth Proportional to 1,444.90, 1,994.55 and 885.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.90 : 1,994.55 = 885.55 : x
2. Step 2: Convert to fraction form
   1,444.90/1,994.55 = 885.55/x
3. Step 3: Cross multiply
   1,444.90x = 1,994.55 × 885.55
4. Step 4: Simplify right side
   1,444.90x = 1,766,273.75
5. Step 5: Solve for x
   x = 1,766,273.75/1,444.90
6. Step 6: Final answer
   x = 1,222.42