Finding the Fourth Proportional to 2,080.35, 3,118.96 and 1,258.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.35 : 3,118.96 = 1,258.46 : x
2. Step 2: Convert to fraction form
   2,080.35/3,118.96 = 1,258.46/x
3. Step 3: Cross multiply
   2,080.35x = 3,118.96 × 1,258.46
4. Step 4: Simplify right side
   2,080.35x = 3,925,086.40
5. Step 5: Solve for x
   x = 3,925,086.40/2,080.35
6. Step 6: Final answer
   x = 1,886.74