Finding the Fourth Proportional to 1,644.37, 2,269.86 and 1,015

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.37 : 2,269.86 = 1,015 : x
2. Step 2: Convert to fraction form
   1,644.37/2,269.86 = 1,015/x
3. Step 3: Cross multiply
   1,644.37x = 2,269.86 × 1,015
4. Step 4: Simplify right side
   1,644.37x = 2,303,907.90
5. Step 5: Solve for x
   x = 2,303,907.90/1,644.37
6. Step 6: Final answer
   x = 1,401.09