Finding the Fourth Proportional to 1,225.74, 1,838.86 and 404.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.74 : 1,838.86 = 404.06 : x
2. Step 2: Convert to fraction form
   1,225.74/1,838.86 = 404.06/x
3. Step 3: Cross multiply
   1,225.74x = 1,838.86 × 404.06
4. Step 4: Simplify right side
   1,225.74x = 743,009.77
5. Step 5: Solve for x
   x = 743,009.77/1,225.74
6. Step 6: Final answer
   x = 606.17