Finding the Fourth Proportional to 1,344.33, 1,855.17 and 784.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,344.33 : 1,855.17 = 784.89 : x
2. Step 2: Convert to fraction form
   1,344.33/1,855.17 = 784.89/x
3. Step 3: Cross multiply
   1,344.33x = 1,855.17 × 784.89
4. Step 4: Simplify right side
   1,344.33x = 1,456,104.38
5. Step 5: Solve for x
   x = 1,456,104.38/1,344.33
6. Step 6: Final answer
   x = 1,083.15