Finding the Fourth Proportional to 1,347.96, 1,859.97 and 788.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.96 : 1,859.97 = 788.37 : x
2. Step 2: Convert to fraction form
   1,347.96/1,859.97 = 788.37/x
3. Step 3: Cross multiply
   1,347.96x = 1,859.97 × 788.37
4. Step 4: Simplify right side
   1,347.96x = 1,466,344.55
5. Step 5: Solve for x
   x = 1,466,344.55/1,347.96
6. Step 6: Final answer
   x = 1,087.82