Finding the Fourth Proportional to 1,499.23, 2,248.71 and 403.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.23 : 2,248.71 = 403.57 : x
2. Step 2: Convert to fraction form
   1,499.23/2,248.71 = 403.57/x
3. Step 3: Cross multiply
   1,499.23x = 2,248.71 × 403.57
4. Step 4: Simplify right side
   1,499.23x = 907,511.89
5. Step 5: Solve for x
   x = 907,511.89/1,499.23
6. Step 6: Final answer
   x = 605.32