Finding the Fourth Proportional to 1,423.98, 1,964.66 and 834.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.98 : 1,964.66 = 834.10 : x
2. Step 2: Convert to fraction form
   1,423.98/1,964.66 = 834.10/x
3. Step 3: Cross multiply
   1,423.98x = 1,964.66 × 834.10
4. Step 4: Simplify right side
   1,423.98x = 1,638,713.82
5. Step 5: Solve for x
   x = 1,638,713.82/1,423.98
6. Step 6: Final answer
   x = 1,150.80