Finding the Fourth Proportional to 2,810, 3,877.56 and 1,815.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810 : 3,877.56 = 1,815.32 : x
2. Step 2: Convert to fraction form
   2,810/3,877.56 = 1,815.32/x
3. Step 3: Cross multiply
   2,810x = 3,877.56 × 1,815.32
4. Step 4: Simplify right side
   2,810x = 7,039,012.22
5. Step 5: Solve for x
   x = 7,039,012.22/2,810
6. Step 6: Final answer
   x = 2,504.99