Finding the Fourth Proportional to 2,278.22, 3,140.72 and 1,719.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,278.22 : 3,140.72 = 1,719.32 : x
2. Step 2: Convert to fraction form
   2,278.22/3,140.72 = 1,719.32/x
3. Step 3: Cross multiply
   2,278.22x = 3,140.72 × 1,719.32
4. Step 4: Simplify right side
   2,278.22x = 5,399,878.41
5. Step 5: Solve for x
   x = 5,399,878.41/2,278.22
6. Step 6: Final answer
   x = 2,370.22