Finding the Fourth Proportional to 1,644.89, 2,269.94 and 936.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.89 : 2,269.94 = 936.69 : x
2. Step 2: Convert to fraction form
   1,644.89/2,269.94 = 936.69/x
3. Step 3: Cross multiply
   1,644.89x = 2,269.94 × 936.69
4. Step 4: Simplify right side
   1,644.89x = 2,126,240.95
5. Step 5: Solve for x
   x = 2,126,240.95/1,644.89
6. Step 6: Final answer
   x = 1,292.64