Finding the Fourth Proportional to 2,784.12, 4,173.90 and 1,395.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.12 : 4,173.90 = 1,395.78 : x
2. Step 2: Convert to fraction form
   2,784.12/4,173.90 = 1,395.78/x
3. Step 3: Cross multiply
   2,784.12x = 4,173.90 × 1,395.78
4. Step 4: Simplify right side
   2,784.12x = 5,825,846.14
5. Step 5: Solve for x
   x = 5,825,846.14/2,784.12
6. Step 6: Final answer
   x = 2,092.53