Finding the Fourth Proportional to 2,107.56, 2,908.50 and 1,408.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,107.56 : 2,908.50 = 1,408.80 : x
2. Step 2: Convert to fraction form
   2,107.56/2,908.50 = 1,408.80/x
3. Step 3: Cross multiply
   2,107.56x = 2,908.50 × 1,408.80
4. Step 4: Simplify right side
   2,107.56x = 4,097,494.80
5. Step 5: Solve for x
   x = 4,097,494.80/2,107.56
6. Step 6: Final answer
   x = 1,944.19