Finding the Fourth Proportional to 1,076.72, 1,615.38 and 460.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.72 : 1,615.38 = 460.82 : x
2. Step 2: Convert to fraction form
   1,076.72/1,615.38 = 460.82/x
3. Step 3: Cross multiply
   1,076.72x = 1,615.38 × 460.82
4. Step 4: Simplify right side
   1,076.72x = 744,399.41
5. Step 5: Solve for x
   x = 744,399.41/1,076.72
6. Step 6: Final answer
   x = 691.36