Finding the Fourth Proportional to 3,780.02, 5,216.42 and 2,078.51

Step by Step Solution

1. Step 1: Write the proportion equation
   3,780.02 : 5,216.42 = 2,078.51 : x
2. Step 2: Convert to fraction form
   3,780.02/5,216.42 = 2,078.51/x
3. Step 3: Cross multiply
   3,780.02x = 5,216.42 × 2,078.51
4. Step 4: Simplify right side
   3,780.02x = 10,842,344.66
5. Step 5: Solve for x
   x = 10,842,344.66/3,780.02
6. Step 6: Final answer
   x = 2,868.33