Finding the Fourth Proportional to 1,439.98, 1,986.96 and 834.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.98 : 1,986.96 = 834.09 : x
2. Step 2: Convert to fraction form
   1,439.98/1,986.96 = 834.09/x
3. Step 3: Cross multiply
   1,439.98x = 1,986.96 × 834.09
4. Step 4: Simplify right side
   1,439.98x = 1,657,310.32
5. Step 5: Solve for x
   x = 1,657,310.32/1,439.98
6. Step 6: Final answer
   x = 1,150.93