Finding the Fourth Proportional to 796.99, 1,100.38 and 498.69

Step by Step Solution

1. Step 1: Write the proportion equation
   796.99 : 1,100.38 = 498.69 : x
2. Step 2: Convert to fraction form
   796.99/1,100.38 = 498.69/x
3. Step 3: Cross multiply
   796.99x = 1,100.38 × 498.69
4. Step 4: Simplify right side
   796.99x = 548,748.89
5. Step 5: Solve for x
   x = 548,748.89/796.99
6. Step 6: Final answer
   x = 688.52