Finding the Fourth Proportional to 2,804.18, 4,186.55 and 2,142.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,804.18 : 4,186.55 = 2,142.59 : x
2. Step 2: Convert to fraction form
   2,804.18/4,186.55 = 2,142.59/x
3. Step 3: Cross multiply
   2,804.18x = 4,186.55 × 2,142.59
4. Step 4: Simplify right side
   2,804.18x = 8,970,028.52
5. Step 5: Solve for x
   x = 8,970,028.52/2,804.18
6. Step 6: Final answer
   x = 3,198.81