Finding the Fourth Proportional to 2,401.48, 3,309.78 and 1,811.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.48 : 3,309.78 = 1,811.80 : x
2. Step 2: Convert to fraction form
   2,401.48/3,309.78 = 1,811.80/x
3. Step 3: Cross multiply
   2,401.48x = 3,309.78 × 1,811.80
4. Step 4: Simplify right side
   2,401.48x = 5,996,659.40
5. Step 5: Solve for x
   x = 5,996,659.40/2,401.48
6. Step 6: Final answer
   x = 2,497.07