Finding the Fourth Proportional to 2,081.45, 3,118.52 and 1,855.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.45 : 3,118.52 = 1,855.46 : x
2. Step 2: Convert to fraction form
   2,081.45/3,118.52 = 1,855.46/x
3. Step 3: Cross multiply
   2,081.45x = 3,118.52 × 1,855.46
4. Step 4: Simplify right side
   2,081.45x = 5,786,264.25
5. Step 5: Solve for x
   x = 5,786,264.25/2,081.45
6. Step 6: Final answer
   x = 2,779.93