Finding the Fourth Proportional to 1,423.31, 1,964.05 and 834.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.31 : 1,964.05 = 834.03 : x
2. Step 2: Convert to fraction form
   1,423.31/1,964.05 = 834.03/x
3. Step 3: Cross multiply
   1,423.31x = 1,964.05 × 834.03
4. Step 4: Simplify right side
   1,423.31x = 1,638,074.54
5. Step 5: Solve for x
   x = 1,638,074.54/1,423.31
6. Step 6: Final answer
   x = 1,150.89