Finding the Fourth Proportional to 1,160.82, 1,601.95 and 636.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.82 : 1,601.95 = 636.82 : x
2. Step 2: Convert to fraction form
   1,160.82/1,601.95 = 636.82/x
3. Step 3: Cross multiply
   1,160.82x = 1,601.95 × 636.82
4. Step 4: Simplify right side
   1,160.82x = 1,020,153.80
5. Step 5: Solve for x
   x = 1,020,153.80/1,160.82
6. Step 6: Final answer
   x = 878.82