Finding the Fourth Proportional to 1,347.59, 1,859.99 and 788.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.59 : 1,859.99 = 788.32 : x
2. Step 2: Convert to fraction form
   1,347.59/1,859.99 = 788.32/x
3. Step 3: Cross multiply
   1,347.59x = 1,859.99 × 788.32
4. Step 4: Simplify right side
   1,347.59x = 1,466,258.73
5. Step 5: Solve for x
   x = 1,466,258.73/1,347.59
6. Step 6: Final answer
   x = 1,088.06