Finding the Fourth Proportional to 1,160.23, 1,601.25 and 663.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.23 : 1,601.25 = 663.02 : x
2. Step 2: Convert to fraction form
   1,160.23/1,601.25 = 663.02/x
3. Step 3: Cross multiply
   1,160.23x = 1,601.25 × 663.02
4. Step 4: Simplify right side
   1,160.23x = 1,061,660.78
5. Step 5: Solve for x
   x = 1,061,660.78/1,160.23
6. Step 6: Final answer
   x = 915.05