Finding the Fourth Proportional to 1,226.07, 1,838.52 and 404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226.07 : 1,838.52 = 404.10 : x
2. Step 2: Convert to fraction form
   1,226.07/1,838.52 = 404.10/x
3. Step 3: Cross multiply
   1,226.07x = 1,838.52 × 404.10
4. Step 4: Simplify right side
   1,226.07x = 742,945.93
5. Step 5: Solve for x
   x = 742,945.93/1,226.07
6. Step 6: Final answer
   x = 605.96