Finding the Fourth Proportional to 1,109.46, 1,530.94 and 612.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.46 : 1,530.94 = 612.04 : x
2. Step 2: Convert to fraction form
   1,109.46/1,530.94 = 612.04/x
3. Step 3: Cross multiply
   1,109.46x = 1,530.94 × 612.04
4. Step 4: Simplify right side
   1,109.46x = 936,996.52
5. Step 5: Solve for x
   x = 936,996.52/1,109.46
6. Step 6: Final answer
   x = 844.55