Finding the Fourth Proportional to 1,258.51, 1,738.83 and 994.97

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.51 : 1,738.83 = 994.97 : x
2. Step 2: Convert to fraction form
   1,258.51/1,738.83 = 994.97/x
3. Step 3: Cross multiply
   1,258.51x = 1,738.83 × 994.97
4. Step 4: Simplify right side
   1,258.51x = 1,730,083.69
5. Step 5: Solve for x
   x = 1,730,083.69/1,258.51
6. Step 6: Final answer
   x = 1,374.71