Finding the Fourth Proportional to 2,527.12, 3,487.40 and 1,408.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,527.12 : 3,487.40 = 1,408.05 : x
2. Step 2: Convert to fraction form
   2,527.12/3,487.40 = 1,408.05/x
3. Step 3: Cross multiply
   2,527.12x = 3,487.40 × 1,408.05
4. Step 4: Simplify right side
   2,527.12x = 4,910,433.57
5. Step 5: Solve for x
   x = 4,910,433.57/2,527.12
6. Step 6: Final answer
   x = 1,943.09