Finding the Fourth Proportional to 1,160.82, 1,601.82 and 663.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.82 : 1,601.82 = 663.30 : x
2. Step 2: Convert to fraction form
   1,160.82/1,601.82 = 663.30/x
3. Step 3: Cross multiply
   1,160.82x = 1,601.82 × 663.30
4. Step 4: Simplify right side
   1,160.82x = 1,062,487.21
5. Step 5: Solve for x
   x = 1,062,487.21/1,160.82
6. Step 6: Final answer
   x = 915.29