Finding the Fourth Proportional to 2,722.22, 4,080.18 and 1,258.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.22 : 4,080.18 = 1,258.31 : x
2. Step 2: Convert to fraction form
   2,722.22/4,080.18 = 1,258.31/x
3. Step 3: Cross multiply
   2,722.22x = 4,080.18 × 1,258.31
4. Step 4: Simplify right side
   2,722.22x = 5,134,131.30
5. Step 5: Solve for x
   x = 5,134,131.30/2,722.22
6. Step 6: Final answer
   x = 1,886.01