Finding the Fourth Proportional to 2,305.77, 3,181.83 and 1,310.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.77 : 3,181.83 = 1,310.91 : x
2. Step 2: Convert to fraction form
   2,305.77/3,181.83 = 1,310.91/x
3. Step 3: Cross multiply
   2,305.77x = 3,181.83 × 1,310.91
4. Step 4: Simplify right side
   2,305.77x = 4,171,092.77
5. Step 5: Solve for x
   x = 4,171,092.77/2,305.77
6. Step 6: Final answer
   x = 1,808.98