Finding the Fourth Proportional to 2,405.80, 3,314.82 and 2,405.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405.80 : 3,314.82 = 2,405.80 : x
2. Step 2: Convert to fraction form
   2,405.80/3,314.82 = 2,405.80/x
3. Step 3: Cross multiply
   2,405.80x = 3,314.82 × 2,405.80
4. Step 4: Simplify right side
   2,405.80x = 7,974,793.96
5. Step 5: Solve for x
   x = 7,974,793.96/2,405.80
6. Step 6: Final answer
   x = 3,314.82