Finding the Fourth Proportional to 3,873.11, 5,345.69 and 2,300.90

Step by Step Solution

1. Step 1: Write the proportion equation
   3,873.11 : 5,345.69 = 2,300.90 : x
2. Step 2: Convert to fraction form
   3,873.11/5,345.69 = 2,300.90/x
3. Step 3: Cross multiply
   3,873.11x = 5,345.69 × 2,300.90
4. Step 4: Simplify right side
   3,873.11x = 12,299,859.89
5. Step 5: Solve for x
   x = 12,299,859.89/3,873.11
6. Step 6: Final answer
   x = 3,175.71