Finding the Fourth Proportional to 1,108.82, 1,530.18 and 611.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108.82 : 1,530.18 = 611.46 : x
2. Step 2: Convert to fraction form
   1,108.82/1,530.18 = 611.46/x
3. Step 3: Cross multiply
   1,108.82x = 1,530.18 × 611.46
4. Step 4: Simplify right side
   1,108.82x = 935,643.86
5. Step 5: Solve for x
   x = 935,643.86/1,108.82
6. Step 6: Final answer
   x = 843.82