Finding the Fourth Proportional to 1,223.39, 1,834.69 and 401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.39 : 1,834.69 = 401.50 : x
2. Step 2: Convert to fraction form
   1,223.39/1,834.69 = 401.50/x
3. Step 3: Cross multiply
   1,223.39x = 1,834.69 × 401.50
4. Step 4: Simplify right side
   1,223.39x = 736,628.04
5. Step 5: Solve for x
   x = 736,628.04/1,223.39
6. Step 6: Final answer
   x = 602.12