Finding the Fourth Proportional to 2,805.15, 3,873.17 and 1,811.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,805.15 : 3,873.17 = 1,811.01 : x
2. Step 2: Convert to fraction form
   2,805.15/3,873.17 = 1,811.01/x
3. Step 3: Cross multiply
   2,805.15x = 3,873.17 × 1,811.01
4. Step 4: Simplify right side
   2,805.15x = 7,014,340.55
5. Step 5: Solve for x
   x = 7,014,340.55/2,805.15
6. Step 6: Final answer
   x = 2,500.52