Finding the Fourth Proportional to 2,494.50, 3,742.19 and 828.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,494.50 : 3,742.19 = 828.72 : x
2. Step 2: Convert to fraction form
   2,494.50/3,742.19 = 828.72/x
3. Step 3: Cross multiply
   2,494.50x = 3,742.19 × 828.72
4. Step 4: Simplify right side
   2,494.50x = 3,101,223.55
5. Step 5: Solve for x
   x = 3,101,223.55/2,494.50
6. Step 6: Final answer
   x = 1,243.23