Finding the Fourth Proportional to 3,751.56, 5,621.46 and 2,187.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,751.56 : 5,621.46 = 2,187.69 : x
2. Step 2: Convert to fraction form
   3,751.56/5,621.46 = 2,187.69/x
3. Step 3: Cross multiply
   3,751.56x = 5,621.46 × 2,187.69
4. Step 4: Simplify right side
   3,751.56x = 12,298,011.83
5. Step 5: Solve for x
   x = 12,298,011.83/3,751.56
6. Step 6: Final answer
   x = 3,278.11