Finding the Fourth Proportional to 1,225.52, 1,837.89 and 403.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,225.52 : 1,837.89 = 403.57 : x
2. Step 2: Convert to fraction form
   1,225.52/1,837.89 = 403.57/x
3. Step 3: Cross multiply
   1,225.52x = 1,837.89 × 403.57
4. Step 4: Simplify right side
   1,225.52x = 741,717.27
5. Step 5: Solve for x
   x = 741,717.27/1,225.52
6. Step 6: Final answer
   x = 605.23