Finding the Fourth Proportional to 3,749.21, 5,620.71 and 2,185.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,749.21 : 5,620.71 = 2,185.37 : x
2. Step 2: Convert to fraction form
   3,749.21/5,620.71 = 2,185.37/x
3. Step 3: Cross multiply
   3,749.21x = 5,620.71 × 2,185.37
4. Step 4: Simplify right side
   3,749.21x = 12,283,331.01
5. Step 5: Solve for x
   x = 12,283,331.01/3,749.21
6. Step 6: Final answer
   x = 3,276.25