Finding the Fourth Proportional to 2,605.78, 3,595.95 and 1,426.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,605.78 : 3,595.95 = 1,426.78 : x
2. Step 2: Convert to fraction form
   2,605.78/3,595.95 = 1,426.78/x
3. Step 3: Cross multiply
   2,605.78x = 3,595.95 × 1,426.78
4. Step 4: Simplify right side
   2,605.78x = 5,130,629.54
5. Step 5: Solve for x
   x = 5,130,629.54/2,605.78
6. Step 6: Final answer
   x = 1,968.94