Finding the Fourth Proportional to 2,493.69, 3,440.33 and 1,431.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,493.69 : 3,440.33 = 1,431.07 : x
2. Step 2: Convert to fraction form
   2,493.69/3,440.33 = 1,431.07/x
3. Step 3: Cross multiply
   2,493.69x = 3,440.33 × 1,431.07
4. Step 4: Simplify right side
   2,493.69x = 4,923,345.90
5. Step 5: Solve for x
   x = 4,923,345.90/2,493.69
6. Step 6: Final answer
   x = 1,974.32