Finding the Fourth Proportional to 1,160.34, 1,601.29 and 636.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.34 : 1,601.29 = 636.37 : x
2. Step 2: Convert to fraction form
   1,160.34/1,601.29 = 636.37/x
3. Step 3: Cross multiply
   1,160.34x = 1,601.29 × 636.37
4. Step 4: Simplify right side
   1,160.34x = 1,019,004.91
5. Step 5: Solve for x
   x = 1,019,004.91/1,160.34
6. Step 6: Final answer
   x = 878.20