Finding the Fourth Proportional to 3,783.30, 5,218.98 and 2,457.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.30 : 5,218.98 = 2,457.72 : x
2. Step 2: Convert to fraction form
   3,783.30/5,218.98 = 2,457.72/x
3. Step 3: Cross multiply
   3,783.30x = 5,218.98 × 2,457.72
4. Step 4: Simplify right side
   3,783.30x = 12,826,791.53
5. Step 5: Solve for x
   x = 12,826,791.53/3,783.30
6. Step 6: Final answer
   x = 3,390.37