Finding the Fourth Proportional to 1,225.86, 1,839.02 and 404.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.86 : 1,839.02 = 404.37 : x
2. Step 2: Convert to fraction form
   1,225.86/1,839.02 = 404.37/x
3. Step 3: Cross multiply
   1,225.86x = 1,839.02 × 404.37
4. Step 4: Simplify right side
   1,225.86x = 743,635.32
5. Step 5: Solve for x
   x = 743,635.32/1,225.86
6. Step 6: Final answer
   x = 606.63