Finding the Fourth Proportional to 2,083.13, 3,118.47 and 1,258.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.13 : 3,118.47 = 1,258.91 : x
2. Step 2: Convert to fraction form
   2,083.13/3,118.47 = 1,258.91/x
3. Step 3: Cross multiply
   2,083.13x = 3,118.47 × 1,258.91
4. Step 4: Simplify right side
   2,083.13x = 3,925,864.45
5. Step 5: Solve for x
   x = 3,925,864.45/2,083.13
6. Step 6: Final answer
   x = 1,884.60