Finding the Fourth Proportional to 3,909.21, 5,855.95 and 1,826.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,909.21 : 5,855.95 = 1,826.34 : x
2. Step 2: Convert to fraction form
   3,909.21/5,855.95 = 1,826.34/x
3. Step 3: Cross multiply
   3,909.21x = 5,855.95 × 1,826.34
4. Step 4: Simplify right side
   3,909.21x = 10,694,955.72
5. Step 5: Solve for x
   x = 10,694,955.72/3,909.21
6. Step 6: Final answer
   x = 2,735.84