Finding the Fourth Proportional to 2,410.51, 3,615.58 and 678.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,410.51 : 3,615.58 = 678.91 : x
2. Step 2: Convert to fraction form
   2,410.51/3,615.58 = 678.91/x
3. Step 3: Cross multiply
   2,410.51x = 3,615.58 × 678.91
4. Step 4: Simplify right side
   2,410.51x = 2,454,653.42
5. Step 5: Solve for x
   x = 2,454,653.42/2,410.51
6. Step 6: Final answer
   x = 1,018.31