Finding the Fourth Proportional to 2,839.32, 4,257.54 and 1,299

Step by Step Solution

1. Step 1: Write the proportion equation
   2,839.32 : 4,257.54 = 1,299 : x
2. Step 2: Convert to fraction form
   2,839.32/4,257.54 = 1,299/x
3. Step 3: Cross multiply
   2,839.32x = 4,257.54 × 1,299
4. Step 4: Simplify right side
   2,839.32x = 5,530,544.46
5. Step 5: Solve for x
   x = 5,530,544.46/2,839.32
6. Step 6: Final answer
   x = 1,947.84