Finding the Fourth Proportional to 1,283.33, 1,771.32 and 785.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,283.33 : 1,771.32 = 785.89 : x
2. Step 2: Convert to fraction form
   1,283.33/1,771.32 = 785.89/x
3. Step 3: Cross multiply
   1,283.33x = 1,771.32 × 785.89
4. Step 4: Simplify right side
   1,283.33x = 1,392,053.45
5. Step 5: Solve for x
   x = 1,392,053.45/1,283.33
6. Step 6: Final answer
   x = 1,084.72