Finding the Fourth Proportional to 3,780.59, 5,212.69 and 2,453.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.59 : 5,212.69 = 2,453.81 : x
2. Step 2: Convert to fraction form
   3,780.59/5,212.69 = 2,453.81/x
3. Step 3: Cross multiply
   3,780.59x = 5,212.69 × 2,453.81
4. Step 4: Simplify right side
   3,780.59x = 12,790,918.65
5. Step 5: Solve for x
   x = 12,790,918.65/3,780.59
6. Step 6: Final answer
   x = 3,383.32