Finding the Fourth Proportional to 1,644.24, 2,269.17 and 981.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.24 : 2,269.17 = 981.12 : x
2. Step 2: Convert to fraction form
   1,644.24/2,269.17 = 981.12/x
3. Step 3: Cross multiply
   1,644.24x = 2,269.17 × 981.12
4. Step 4: Simplify right side
   1,644.24x = 2,226,328.07
5. Step 5: Solve for x
   x = 2,226,328.07/1,644.24
6. Step 6: Final answer
   x = 1,354.02