Finding the Fourth Proportional to 1,514.59, 2,272.76 and 865.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.59 : 2,272.76 = 865.78 : x
2. Step 2: Convert to fraction form
   1,514.59/2,272.76 = 865.78/x
3. Step 3: Cross multiply
   1,514.59x = 2,272.76 × 865.78
4. Step 4: Simplify right side
   1,514.59x = 1,967,694.46
5. Step 5: Solve for x
   x = 1,967,694.46/1,514.59
6. Step 6: Final answer
   x = 1,299.16