Finding the Fourth Proportional to 1,258.00, 1,736.47 and 779.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,258.00 : 1,736.47 = 779.82 : x
2. Step 2: Convert to fraction form
   1,258.00/1,736.47 = 779.82/x
3. Step 3: Cross multiply
   1,258.00x = 1,736.47 × 779.82
4. Step 4: Simplify right side
   1,258.00x = 1,354,128.50
5. Step 5: Solve for x
   x = 1,354,128.50/1,258.00
6. Step 6: Final answer
   x = 1,076.42