Finding the Fourth Proportional to 2,106.44, 2,905.30 and 1,610.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.44 : 2,905.30 = 1,610.72 : x
2. Step 2: Convert to fraction form
   2,106.44/2,905.30 = 1,610.72/x
3. Step 3: Cross multiply
   2,106.44x = 2,905.30 × 1,610.72
4. Step 4: Simplify right side
   2,106.44x = 4,679,624.82
5. Step 5: Solve for x
   x = 4,679,624.82/2,106.44
6. Step 6: Final answer
   x = 2,221.58