Finding the Fourth Proportional to 1,223.98, 1,834.17 and 964.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.98 : 1,834.17 = 964.60 : x
2. Step 2: Convert to fraction form
   1,223.98/1,834.17 = 964.60/x
3. Step 3: Cross multiply
   1,223.98x = 1,834.17 × 964.60
4. Step 4: Simplify right side
   1,223.98x = 1,769,240.38
5. Step 5: Solve for x
   x = 1,769,240.38/1,223.98
6. Step 6: Final answer
   x = 1,445.48