Finding the Fourth Proportional to 2,509.25, 3,462.82 and 1,390.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,509.25 : 3,462.82 = 1,390.16 : x
2. Step 2: Convert to fraction form
   2,509.25/3,462.82 = 1,390.16/x
3. Step 3: Cross multiply
   2,509.25x = 3,462.82 × 1,390.16
4. Step 4: Simplify right side
   2,509.25x = 4,813,879.03
5. Step 5: Solve for x
   x = 4,813,879.03/2,509.25
6. Step 6: Final answer
   x = 1,918.45