Finding the Fourth Proportional to 2,851.98, 3,932.63 and 1,855.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.98 : 3,932.63 = 1,855.41 : x
2. Step 2: Convert to fraction form
   2,851.98/3,932.63 = 1,855.41/x
3. Step 3: Cross multiply
   2,851.98x = 3,932.63 × 1,855.41
4. Step 4: Simplify right side
   2,851.98x = 7,296,641.03
5. Step 5: Solve for x
   x = 7,296,641.03/2,851.98
6. Step 6: Final answer
   x = 2,558.45