Finding the Fourth Proportional to 1,514.52, 2,271.78 and 540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.52 : 2,271.78 = 540.72 : x
2. Step 2: Convert to fraction form
   1,514.52/2,271.78 = 540.72/x
3. Step 3: Cross multiply
   1,514.52x = 2,271.78 × 540.72
4. Step 4: Simplify right side
   1,514.52x = 1,228,396.88
5. Step 5: Solve for x
   x = 1,228,396.88/1,514.52
6. Step 6: Final answer
   x = 811.08