Finding the Fourth Proportional to 2,039.56, 2,813.34 and 1,778.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.56 : 2,813.34 = 1,778.20 : x
2. Step 2: Convert to fraction form
   2,039.56/2,813.34 = 1,778.20/x
3. Step 3: Cross multiply
   2,039.56x = 2,813.34 × 1,778.20
4. Step 4: Simplify right side
   2,039.56x = 5,002,681.19
5. Step 5: Solve for x
   x = 5,002,681.19/2,039.56
6. Step 6: Final answer
   x = 2,452.82