Finding the Fourth Proportional to 2,310.30, 3,190.59 and 1,781.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,310.30 : 3,190.59 = 1,781.10 : x
2. Step 2: Convert to fraction form
   2,310.30/3,190.59 = 1,781.10/x
3. Step 3: Cross multiply
   2,310.30x = 3,190.59 × 1,781.10
4. Step 4: Simplify right side
   2,310.30x = 5,682,759.85
5. Step 5: Solve for x
   x = 5,682,759.85/2,310.30
6. Step 6: Final answer
   x = 2,459.75