Finding the Fourth Proportional to 2,789.02, 4,180.81 and 1,327.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.02 : 4,180.81 = 1,327.78 : x
2. Step 2: Convert to fraction form
   2,789.02/4,180.81 = 1,327.78/x
3. Step 3: Cross multiply
   2,789.02x = 4,180.81 × 1,327.78
4. Step 4: Simplify right side
   2,789.02x = 5,551,195.90
5. Step 5: Solve for x
   x = 5,551,195.90/2,789.02
6. Step 6: Final answer
   x = 1,990.38