Finding the Fourth Proportional to 1,160.48, 1,601.51 and 636.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.48 : 1,601.51 = 636.52 : x
2. Step 2: Convert to fraction form
   1,160.48/1,601.51 = 636.52/x
3. Step 3: Cross multiply
   1,160.48x = 1,601.51 × 636.52
4. Step 4: Simplify right side
   1,160.48x = 1,019,393.15
5. Step 5: Solve for x
   x = 1,019,393.15/1,160.48
6. Step 6: Final answer
   x = 878.42