Finding the Fourth Proportional to 2,300.20, 3,173.51 and 1,305.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.20 : 3,173.51 = 1,305.11 : x
2. Step 2: Convert to fraction form
   2,300.20/3,173.51 = 1,305.11/x
3. Step 3: Cross multiply
   2,300.20x = 3,173.51 × 1,305.11
4. Step 4: Simplify right side
   2,300.20x = 4,141,790.83
5. Step 5: Solve for x
   x = 4,141,790.83/2,300.20
6. Step 6: Final answer
   x = 1,800.62