Finding the Fourth Proportional to 2,185.62, 3,259.98 and 1,857.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.62 : 3,259.98 = 1,857.30 : x
2. Step 2: Convert to fraction form
   2,185.62/3,259.98 = 1,857.30/x
3. Step 3: Cross multiply
   2,185.62x = 3,259.98 × 1,857.30
4. Step 4: Simplify right side
   2,185.62x = 6,054,760.85
5. Step 5: Solve for x
   x = 6,054,760.85/2,185.62
6. Step 6: Final answer
   x = 2,770.27