Finding the Fourth Proportional to 2,357.89, 3,256.08 and 1,520.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,357.89 : 3,256.08 = 1,520.56 : x
2. Step 2: Convert to fraction form
   2,357.89/3,256.08 = 1,520.56/x
3. Step 3: Cross multiply
   2,357.89x = 3,256.08 × 1,520.56
4. Step 4: Simplify right side
   2,357.89x = 4,951,048.72
5. Step 5: Solve for x
   x = 4,951,048.72/2,357.89
6. Step 6: Final answer
   x = 2,099.78