Finding the Fourth Proportional to 2,551.25, 3,520.31 and 1,606.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,551.25 : 3,520.31 = 1,606.69 : x
2. Step 2: Convert to fraction form
   2,551.25/3,520.31 = 1,606.69/x
3. Step 3: Cross multiply
   2,551.25x = 3,520.31 × 1,606.69
4. Step 4: Simplify right side
   2,551.25x = 5,656,042.09
5. Step 5: Solve for x
   x = 5,656,042.09/2,551.25
6. Step 6: Final answer
   x = 2,216.97