Finding the Fourth Proportional to 2,558.84, 3,839.40 and 1,404.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.84 : 3,839.40 = 1,404.56 : x
2. Step 2: Convert to fraction form
   2,558.84/3,839.40 = 1,404.56/x
3. Step 3: Cross multiply
   2,558.84x = 3,839.40 × 1,404.56
4. Step 4: Simplify right side
   2,558.84x = 5,392,667.66
5. Step 5: Solve for x
   x = 5,392,667.66/2,558.84
6. Step 6: Final answer
   x = 2,107.47