Finding the Fourth Proportional to 1,644.50, 2,269.82 and 981.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.50 : 2,269.82 = 981.62 : x
2. Step 2: Convert to fraction form
   1,644.50/2,269.82 = 981.62/x
3. Step 3: Cross multiply
   1,644.50x = 2,269.82 × 981.62
4. Step 4: Simplify right side
   1,644.50x = 2,228,100.33
5. Step 5: Solve for x
   x = 2,228,100.33/1,644.50
6. Step 6: Final answer
   x = 1,354.88