Finding the Fourth Proportional to 1,348.22, 1,859.90 and 788.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.22 : 1,859.90 = 788.71 : x
2. Step 2: Convert to fraction form
   1,348.22/1,859.90 = 788.71/x
3. Step 3: Cross multiply
   1,348.22x = 1,859.90 × 788.71
4. Step 4: Simplify right side
   1,348.22x = 1,466,912.43
5. Step 5: Solve for x
   x = 1,466,912.43/1,348.22
6. Step 6: Final answer
   x = 1,088.04