Finding the Fourth Proportional to 1,039.01, 1,558.50 and 269.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.01 : 1,558.50 = 269.49 : x
2. Step 2: Convert to fraction form
   1,039.01/1,558.50 = 269.49/x
3. Step 3: Cross multiply
   1,039.01x = 1,558.50 × 269.49
4. Step 4: Simplify right side
   1,039.01x = 419,998.82
5. Step 5: Solve for x
   x = 419,998.82/1,039.01
6. Step 6: Final answer
   x = 404.23