Finding the Fourth Proportional to 1,445.62, 1,994.50 and 885.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.62 : 1,994.50 = 885.51 : x
2. Step 2: Convert to fraction form
   1,445.62/1,994.50 = 885.51/x
3. Step 3: Cross multiply
   1,445.62x = 1,994.50 × 885.51
4. Step 4: Simplify right side
   1,445.62x = 1,766,149.70
5. Step 5: Solve for x
   x = 1,766,149.70/1,445.62
6. Step 6: Final answer
   x = 1,221.72