Finding the Fourth Proportional to 3,749.71, 5,621.46 and 2,185.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,749.71 : 5,621.46 = 2,185.87 : x
2. Step 2: Convert to fraction form
   3,749.71/5,621.46 = 2,185.87/x
3. Step 3: Cross multiply
   3,749.71x = 5,621.46 × 2,185.87
4. Step 4: Simplify right side
   3,749.71x = 12,287,780.77
5. Step 5: Solve for x
   x = 12,287,780.77/3,749.71
6. Step 6: Final answer
   x = 3,276.99