Finding the Fourth Proportional to 1,347.97, 1,859.73 and 788.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.97 : 1,859.73 = 788.41 : x
2. Step 2: Convert to fraction form
   1,347.97/1,859.73 = 788.41/x
3. Step 3: Cross multiply
   1,347.97x = 1,859.73 × 788.41
4. Step 4: Simplify right side
   1,347.97x = 1,466,229.73
5. Step 5: Solve for x
   x = 1,466,229.73/1,347.97
6. Step 6: Final answer
   x = 1,087.73