Finding the Fourth Proportional to 1,086.03, 1,498.55 and 613.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.03 : 1,498.55 = 613.83 : x
2. Step 2: Convert to fraction form
   1,086.03/1,498.55 = 613.83/x
3. Step 3: Cross multiply
   1,086.03x = 1,498.55 × 613.83
4. Step 4: Simplify right side
   1,086.03x = 919,851.88
5. Step 5: Solve for x
   x = 919,851.88/1,086.03
6. Step 6: Final answer
   x = 846.99