Finding the Fourth Proportional to 2,778.55, 4,167.56 and 1,682.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.55 : 4,167.56 = 1,682.62 : x
2. Step 2: Convert to fraction form
   2,778.55/4,167.56 = 1,682.62/x
3. Step 3: Cross multiply
   2,778.55x = 4,167.56 × 1,682.62
4. Step 4: Simplify right side
   2,778.55x = 7,012,411.39
5. Step 5: Solve for x
   x = 7,012,411.39/2,778.55
6. Step 6: Final answer
   x = 2,523.77