Finding the Fourth Proportional to 2,778.57, 4,164.44 and 1,314.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,778.57 : 4,164.44 = 1,314.69 : x
2. Step 2: Convert to fraction form
   2,778.57/4,164.44 = 1,314.69/x
3. Step 3: Cross multiply
   2,778.57x = 4,164.44 × 1,314.69
4. Step 4: Simplify right side
   2,778.57x = 5,474,941.05
5. Step 5: Solve for x
   x = 5,474,941.05/2,778.57
6. Step 6: Final answer
   x = 1,970.42