Finding the Fourth Proportional to 1,514.31, 2,271.60 and 648.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,514.31 : 2,271.60 = 648.42 : x
2. Step 2: Convert to fraction form
   1,514.31/2,271.60 = 648.42/x
3. Step 3: Cross multiply
   1,514.31x = 2,271.60 × 648.42
4. Step 4: Simplify right side
   1,514.31x = 1,472,950.87
5. Step 5: Solve for x
   x = 1,472,950.87/1,514.31
6. Step 6: Final answer
   x = 972.69