Finding the Fourth Proportional to 1,506.42, 2,078.61 and 885.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,506.42 : 2,078.61 = 885.54 : x
2. Step 2: Convert to fraction form
   1,506.42/2,078.61 = 885.54/x
3. Step 3: Cross multiply
   1,506.42x = 2,078.61 × 885.54
4. Step 4: Simplify right side
   1,506.42x = 1,840,692.30
5. Step 5: Solve for x
   x = 1,840,692.30/1,506.42
6. Step 6: Final answer
   x = 1,221.90