Finding the Fourth Proportional to 1,060.24, 1,462.32 and 687.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.24 : 1,462.32 = 687.31 : x
2. Step 2: Convert to fraction form
   1,060.24/1,462.32 = 687.31/x
3. Step 3: Cross multiply
   1,060.24x = 1,462.32 × 687.31
4. Step 4: Simplify right side
   1,060.24x = 1,005,067.16
5. Step 5: Solve for x
   x = 1,005,067.16/1,060.24
6. Step 6: Final answer
   x = 947.96