Finding the Fourth Proportional to 2,651.91, 3,978.09 and 704.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,651.91 : 3,978.09 = 704.09 : x
2. Step 2: Convert to fraction form
   2,651.91/3,978.09 = 704.09/x
3. Step 3: Cross multiply
   2,651.91x = 3,978.09 × 704.09
4. Step 4: Simplify right side
   2,651.91x = 2,800,933.39
5. Step 5: Solve for x
   x = 2,800,933.39/2,651.91
6. Step 6: Final answer
   x = 1,056.19