Finding the Fourth Proportional to 1,439.82, 1,986.96 and 818.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.82 : 1,986.96 = 818.82 : x
2. Step 2: Convert to fraction form
   1,439.82/1,986.96 = 818.82/x
3. Step 3: Cross multiply
   1,439.82x = 1,986.96 × 818.82
4. Step 4: Simplify right side
   1,439.82x = 1,626,962.59
5. Step 5: Solve for x
   x = 1,626,962.59/1,439.82
6. Step 6: Final answer
   x = 1,129.98