Finding the Fourth Proportional to 2,625.87, 3,940.73 and 1,393.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,625.87 : 3,940.73 = 1,393.53 : x
2. Step 2: Convert to fraction form
   2,625.87/3,940.73 = 1,393.53/x
3. Step 3: Cross multiply
   2,625.87x = 3,940.73 × 1,393.53
4. Step 4: Simplify right side
   2,625.87x = 5,491,525.48
5. Step 5: Solve for x
   x = 5,491,525.48/2,625.87
6. Step 6: Final answer
   x = 2,091.32