Finding the Fourth Proportional to 1,222.76, 1,834.18 and 492.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.76 : 1,834.18 = 492.28 : x
2. Step 2: Convert to fraction form
   1,222.76/1,834.18 = 492.28/x
3. Step 3: Cross multiply
   1,222.76x = 1,834.18 × 492.28
4. Step 4: Simplify right side
   1,222.76x = 902,924.31
5. Step 5: Solve for x
   x = 902,924.31/1,222.76
6. Step 6: Final answer
   x = 738.43