Finding the Fourth Proportional to 1,188.59, 1,640.72 and 795.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188.59 : 1,640.72 = 795.47 : x
2. Step 2: Convert to fraction form
   1,188.59/1,640.72 = 795.47/x
3. Step 3: Cross multiply
   1,188.59x = 1,640.72 × 795.47
4. Step 4: Simplify right side
   1,188.59x = 1,305,143.54
5. Step 5: Solve for x
   x = 1,305,143.54/1,188.59
6. Step 6: Final answer
   x = 1,098.06