Finding the Fourth Proportional to 2,555.54, 3,829.98 and 1,855.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,555.54 : 3,829.98 = 1,855.10 : x
2. Step 2: Convert to fraction form
   2,555.54/3,829.98 = 1,855.10/x
3. Step 3: Cross multiply
   2,555.54x = 3,829.98 × 1,855.10
4. Step 4: Simplify right side
   2,555.54x = 7,104,995.90
5. Step 5: Solve for x
   x = 7,104,995.90/2,555.54
6. Step 6: Final answer
   x = 2,780.23