Finding the Fourth Proportional to 2,431.89, 3,355.75 and 1,369.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.89 : 3,355.75 = 1,369.49 : x
2. Step 2: Convert to fraction form
   2,431.89/3,355.75 = 1,369.49/x
3. Step 3: Cross multiply
   2,431.89x = 3,355.75 × 1,369.49
4. Step 4: Simplify right side
   2,431.89x = 4,595,651.00
5. Step 5: Solve for x
   x = 4,595,651.00/2,431.89
6. Step 6: Final answer
   x = 1,889.74