Finding the Fourth Proportional to 1,229.48, 1,843.40 and 498.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.48 : 1,843.40 = 498.86 : x
2. Step 2: Convert to fraction form
   1,229.48/1,843.40 = 498.86/x
3. Step 3: Cross multiply
   1,229.48x = 1,843.40 × 498.86
4. Step 4: Simplify right side
   1,229.48x = 919,598.52
5. Step 5: Solve for x
   x = 919,598.52/1,229.48
6. Step 6: Final answer
   x = 747.96