Finding the Fourth Proportional to 1,160.46, 1,601.46 and 636.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.46 : 1,601.46 = 636.53 : x
2. Step 2: Convert to fraction form
   1,160.46/1,601.46 = 636.53/x
3. Step 3: Cross multiply
   1,160.46x = 1,601.46 × 636.53
4. Step 4: Simplify right side
   1,160.46x = 1,019,369.33
5. Step 5: Solve for x
   x = 1,019,369.33/1,160.46
6. Step 6: Final answer
   x = 878.42