Finding the Fourth Proportional to 1,094.22, 1,639.89 and 444.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.22 : 1,639.89 = 444.18 : x
2. Step 2: Convert to fraction form
   1,094.22/1,639.89 = 444.18/x
3. Step 3: Cross multiply
   1,094.22x = 1,639.89 × 444.18
4. Step 4: Simplify right side
   1,094.22x = 728,406.34
5. Step 5: Solve for x
   x = 728,406.34/1,094.22
6. Step 6: Final answer
   x = 665.69