Finding the Fourth Proportional to 2,068.54, 2,855.55 and 1,405.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.54 : 2,855.55 = 1,405.42 : x
2. Step 2: Convert to fraction form
   2,068.54/2,855.55 = 1,405.42/x
3. Step 3: Cross multiply
   2,068.54x = 2,855.55 × 1,405.42
4. Step 4: Simplify right side
   2,068.54x = 4,013,247.08
5. Step 5: Solve for x
   x = 4,013,247.08/2,068.54
6. Step 6: Final answer
   x = 1,940.14