Finding the Fourth Proportional to 2,804.78, 3,870.54 and 1,757.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,804.78 : 3,870.54 = 1,757.42 : x
2. Step 2: Convert to fraction form
   2,804.78/3,870.54 = 1,757.42/x
3. Step 3: Cross multiply
   2,804.78x = 3,870.54 × 1,757.42
4. Step 4: Simplify right side
   2,804.78x = 6,802,164.41
5. Step 5: Solve for x
   x = 6,802,164.41/2,804.78
6. Step 6: Final answer
   x = 2,425.20