Finding the Fourth Proportional to 1,644.72, 2,269.68 and 946.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.72 : 2,269.68 = 946.10 : x
2. Step 2: Convert to fraction form
   1,644.72/2,269.68 = 946.10/x
3. Step 3: Cross multiply
   1,644.72x = 2,269.68 × 946.10
4. Step 4: Simplify right side
   1,644.72x = 2,147,344.25
5. Step 5: Solve for x
   x = 2,147,344.25/1,644.72
6. Step 6: Final answer
   x = 1,305.60