Finding the Fourth Proportional to 1,480.42, 2,043.57 and 890.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480.42 : 2,043.57 = 890.85 : x
2. Step 2: Convert to fraction form
   1,480.42/2,043.57 = 890.85/x
3. Step 3: Cross multiply
   1,480.42x = 2,043.57 × 890.85
4. Step 4: Simplify right side
   1,480.42x = 1,820,514.33
5. Step 5: Solve for x
   x = 1,820,514.33/1,480.42
6. Step 6: Final answer
   x = 1,229.73