Finding the Fourth Proportional to 1,160.84, 1,601.98 and 636.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,160.84 : 1,601.98 = 636.92 : x
2. Step 2: Convert to fraction form
   1,160.84/1,601.98 = 636.92/x
3. Step 3: Cross multiply
   1,160.84x = 1,601.98 × 636.92
4. Step 4: Simplify right side
   1,160.84x = 1,020,333.10
5. Step 5: Solve for x
   x = 1,020,333.10/1,160.84
6. Step 6: Final answer
   x = 878.96