Finding the Fourth Proportional to 3,978.32, 5,965.42 and 1,785.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.32 : 5,965.42 = 1,785.16 : x
2. Step 2: Convert to fraction form
   3,978.32/5,965.42 = 1,785.16/x
3. Step 3: Cross multiply
   3,978.32x = 5,965.42 × 1,785.16
4. Step 4: Simplify right side
   3,978.32x = 10,649,257.31
5. Step 5: Solve for x
   x = 10,649,257.31/3,978.32
6. Step 6: Final answer
   x = 2,676.83