Finding the Fourth Proportional to 3,402.78, 5,099.42 and 1,839.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,402.78 : 5,099.42 = 1,839.42 : x
2. Step 2: Convert to fraction form
   3,402.78/5,099.42 = 1,839.42/x
3. Step 3: Cross multiply
   3,402.78x = 5,099.42 × 1,839.42
4. Step 4: Simplify right side
   3,402.78x = 9,379,965.94
5. Step 5: Solve for x
   x = 9,379,965.94/3,402.78
6. Step 6: Final answer
   x = 2,756.56