Finding the Fourth Proportional to 2,495, 3,443.10 and 1,391

Step by Step Solution

1. Step 1: Write the proportion equation
   2,495 : 3,443.10 = 1,391 : x
2. Step 2: Convert to fraction form
   2,495/3,443.10 = 1,391/x
3. Step 3: Cross multiply
   2,495x = 3,443.10 × 1,391
4. Step 4: Simplify right side
   2,495x = 4,789,352.10
5. Step 5: Solve for x
   x = 4,789,352.10/2,495
6. Step 6: Final answer
   x = 1,919.58