Finding the Fourth Proportional to 1,686.05, 2,542.56 and 1,662.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686.05 : 2,542.56 = 1,662.96 : x
2. Step 2: Convert to fraction form
   1,686.05/2,542.56 = 1,662.96/x
3. Step 3: Cross multiply
   1,686.05x = 2,542.56 × 1,662.96
4. Step 4: Simplify right side
   1,686.05x = 4,228,175.58
5. Step 5: Solve for x
   x = 4,228,175.58/1,686.05
6. Step 6: Final answer
   x = 2,507.75