Finding the Fourth Proportional to 2,410.32, 3,615.60 and 678.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,410.32 : 3,615.60 = 678.96 : x
2. Step 2: Convert to fraction form
   2,410.32/3,615.60 = 678.96/x
3. Step 3: Cross multiply
   2,410.32x = 3,615.60 × 678.96
4. Step 4: Simplify right side
   2,410.32x = 2,454,847.78
5. Step 5: Solve for x
   x = 2,454,847.78/2,410.32
6. Step 6: Final answer
   x = 1,018.47