Finding the Fourth Proportional to 1,424.25, 1,964.93 and 834.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.25 : 1,964.93 = 834.57 : x
2. Step 2: Convert to fraction form
   1,424.25/1,964.93 = 834.57/x
3. Step 3: Cross multiply
   1,424.25x = 1,964.93 × 834.57
4. Step 4: Simplify right side
   1,424.25x = 1,639,863.89
5. Step 5: Solve for x
   x = 1,639,863.89/1,424.25
6. Step 6: Final answer
   x = 1,151.39