Finding the Fourth Proportional to 2,081.52, 3,145.90 and 2,045.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.52 : 3,145.90 = 2,045.68 : x
2. Step 2: Convert to fraction form
   2,081.52/3,145.90 = 2,045.68/x
3. Step 3: Cross multiply
   2,081.52x = 3,145.90 × 2,045.68
4. Step 4: Simplify right side
   2,081.52x = 6,435,504.71
5. Step 5: Solve for x
   x = 6,435,504.71/2,081.52
6. Step 6: Final answer
   x = 3,091.73