Finding the Fourth Proportional to 1,383.69, 1,907.33 and 910.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.69 : 1,907.33 = 910.83 : x
2. Step 2: Convert to fraction form
   1,383.69/1,907.33 = 910.83/x
3. Step 3: Cross multiply
   1,383.69x = 1,907.33 × 910.83
4. Step 4: Simplify right side
   1,383.69x = 1,737,248.83
5. Step 5: Solve for x
   x = 1,737,248.83/1,383.69
6. Step 6: Final answer
   x = 1,255.52