Finding the Fourth Proportional to 1,258.37, 1,733.29 and 879.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.37 : 1,733.29 = 879.59 : x
2. Step 2: Convert to fraction form
   1,258.37/1,733.29 = 879.59/x
3. Step 3: Cross multiply
   1,258.37x = 1,733.29 × 879.59
4. Step 4: Simplify right side
   1,258.37x = 1,524,573.69
5. Step 5: Solve for x
   x = 1,524,573.69/1,258.37
6. Step 6: Final answer
   x = 1,211.55