Finding the Fourth Proportional to 2,298, 3,443.90 and 1,256.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,298 : 3,443.90 = 1,256.43 : x
2. Step 2: Convert to fraction form
   2,298/3,443.90 = 1,256.43/x
3. Step 3: Cross multiply
   2,298x = 3,443.90 × 1,256.43
4. Step 4: Simplify right side
   2,298x = 4,327,012.99
5. Step 5: Solve for x
   x = 4,327,012.99/2,298
6. Step 6: Final answer
   x = 1,882.95