Finding the Fourth Proportional to 1,223.00, 1,834.47 and 492.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223.00 : 1,834.47 = 492.55 : x
2. Step 2: Convert to fraction form
   1,223.00/1,834.47 = 492.55/x
3. Step 3: Cross multiply
   1,223.00x = 1,834.47 × 492.55
4. Step 4: Simplify right side
   1,223.00x = 903,573.93
5. Step 5: Solve for x
   x = 903,573.93/1,223.00
6. Step 6: Final answer
   x = 738.82