Finding the Fourth Proportional to 2,788.72, 3,848.22 and 1,609

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.72 : 3,848.22 = 1,609 : x
2. Step 2: Convert to fraction form
   2,788.72/3,848.22 = 1,609/x
3. Step 3: Cross multiply
   2,788.72x = 3,848.22 × 1,609
4. Step 4: Simplify right side
   2,788.72x = 6,191,785.98
5. Step 5: Solve for x
   x = 6,191,785.98/2,788.72
6. Step 6: Final answer
   x = 2,220.30