Finding the Fourth Proportional to 1,095.42, 1,644.30 and 609.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.42 : 1,644.30 = 609.42 : x
2. Step 2: Convert to fraction form
   1,095.42/1,644.30 = 609.42/x
3. Step 3: Cross multiply
   1,095.42x = 1,644.30 × 609.42
4. Step 4: Simplify right side
   1,095.42x = 1,002,069.31
5. Step 5: Solve for x
   x = 1,002,069.31/1,095.42
6. Step 6: Final answer
   x = 914.78