Finding the Fourth Proportional to 1,644.76, 2,268.82 and 981.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,644.76 : 2,268.82 = 981.56 : x
2. Step 2: Convert to fraction form
   1,644.76/2,268.82 = 981.56/x
3. Step 3: Cross multiply
   1,644.76x = 2,268.82 × 981.56
4. Step 4: Simplify right side
   1,644.76x = 2,226,982.96
5. Step 5: Solve for x
   x = 2,226,982.96/1,644.76
6. Step 6: Final answer
   x = 1,353.99