Finding the Fourth Proportional to 2,305.07, 3,180.89 and 1,310.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.07 : 3,180.89 = 1,310.42 : x
2. Step 2: Convert to fraction form
   2,305.07/3,180.89 = 1,310.42/x
3. Step 3: Cross multiply
   2,305.07x = 3,180.89 × 1,310.42
4. Step 4: Simplify right side
   2,305.07x = 4,168,279.42
5. Step 5: Solve for x
   x = 4,168,279.42/2,305.07
6. Step 6: Final answer
   x = 1,808.31