Finding the Fourth Proportional to 2,080.76, 3,119.60 and 1,258.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.76 : 3,119.60 = 1,258.83 : x
2. Step 2: Convert to fraction form
   2,080.76/3,119.60 = 1,258.83/x
3. Step 3: Cross multiply
   2,080.76x = 3,119.60 × 1,258.83
4. Step 4: Simplify right side
   2,080.76x = 3,927,039.77
5. Step 5: Solve for x
   x = 3,927,039.77/2,080.76
6. Step 6: Final answer
   x = 1,887.31