Finding the Fourth Proportional to 2,548.69, 3,820.57 and 1,393.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,548.69 : 3,820.57 = 1,393.63 : x
2. Step 2: Convert to fraction form
   2,548.69/3,820.57 = 1,393.63/x
3. Step 3: Cross multiply
   2,548.69x = 3,820.57 × 1,393.63
4. Step 4: Simplify right side
   2,548.69x = 5,324,460.97
5. Step 5: Solve for x
   x = 5,324,460.97/2,548.69
6. Step 6: Final answer
   x = 2,089.10