Finding the Fourth Proportional to 1,344.79, 1,855.37 and 785.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.79 : 1,855.37 = 785.18 : x
2. Step 2: Convert to fraction form
   1,344.79/1,855.37 = 785.18/x
3. Step 3: Cross multiply
   1,344.79x = 1,855.37 × 785.18
4. Step 4: Simplify right side
   1,344.79x = 1,456,806.02
5. Step 5: Solve for x
   x = 1,456,806.02/1,344.79
6. Step 6: Final answer
   x = 1,083.30