Finding the Fourth Proportional to 2,805.56, 3,871.58 and 1,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.56 : 3,871.58 = 1,610.72 : x
2. Step 2: Convert to fraction form
   2,805.56/3,871.58 = 1,610.72/x
3. Step 3: Cross multiply
   2,805.56x = 3,871.58 × 1,610.72
4. Step 4: Simplify right side
   2,805.56x = 6,236,031.34
5. Step 5: Solve for x
   x = 6,236,031.34/2,805.56
6. Step 6: Final answer
   x = 2,222.74