Finding the Fourth Proportional to 1,188.48, 1,639.98 and 794.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188.48 : 1,639.98 = 794.82 : x
2. Step 2: Convert to fraction form
   1,188.48/1,639.98 = 794.82/x
3. Step 3: Cross multiply
   1,188.48x = 1,639.98 × 794.82
4. Step 4: Simplify right side
   1,188.48x = 1,303,488.90
5. Step 5: Solve for x
   x = 1,303,488.90/1,188.48
6. Step 6: Final answer
   x = 1,096.77