Finding the Fourth Proportional to 1,445.37, 1,994.15 and 885.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.37 : 1,994.15 = 885.26 : x
2. Step 2: Convert to fraction form
   1,445.37/1,994.15 = 885.26/x
3. Step 3: Cross multiply
   1,445.37x = 1,994.15 × 885.26
4. Step 4: Simplify right side
   1,445.37x = 1,765,326.83
5. Step 5: Solve for x
   x = 1,765,326.83/1,445.37
6. Step 6: Final answer
   x = 1,221.37