Finding the Fourth Proportional to 1,514.72, 2,090.26 and 885.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.72 : 2,090.26 = 885.20 : x
2. Step 2: Convert to fraction form
   1,514.72/2,090.26 = 885.20/x
3. Step 3: Cross multiply
   1,514.72x = 2,090.26 × 885.20
4. Step 4: Simplify right side
   1,514.72x = 1,850,298.15
5. Step 5: Solve for x
   x = 1,850,298.15/1,514.72
6. Step 6: Final answer
   x = 1,221.54