Finding the Fourth Proportional to 3,867.35, 5,802.84 and 1,786.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,867.35 : 5,802.84 = 1,786.05 : x
2. Step 2: Convert to fraction form
   3,867.35/5,802.84 = 1,786.05/x
3. Step 3: Cross multiply
   3,867.35x = 5,802.84 × 1,786.05
4. Step 4: Simplify right side
   3,867.35x = 10,364,162.38
5. Step 5: Solve for x
   x = 10,364,162.38/3,867.35
6. Step 6: Final answer
   x = 2,679.92