Finding the Fourth Proportional to 2,808.34, 3,873.32 and 1,813.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.34 : 3,873.32 = 1,813.86 : x
2. Step 2: Convert to fraction form
   2,808.34/3,873.32 = 1,813.86/x
3. Step 3: Cross multiply
   2,808.34x = 3,873.32 × 1,813.86
4. Step 4: Simplify right side
   2,808.34x = 7,025,651.15
5. Step 5: Solve for x
   x = 7,025,651.15/2,808.34
6. Step 6: Final answer
   x = 2,501.71