Finding the Fourth Proportional to 1,097.28, 1,514.28 and 631.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,097.28 : 1,514.28 = 631.50 : x
2. Step 2: Convert to fraction form
   1,097.28/1,514.28 = 631.50/x
3. Step 3: Cross multiply
   1,097.28x = 1,514.28 × 631.50
4. Step 4: Simplify right side
   1,097.28x = 956,267.82
5. Step 5: Solve for x
   x = 956,267.82/1,097.28
6. Step 6: Final answer
   x = 871.49