Finding the Fourth Proportional to 1,083.80, 1,495.71 and 936.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.80 : 1,495.71 = 936.78 : x
2. Step 2: Convert to fraction form
   1,083.80/1,495.71 = 936.78/x
3. Step 3: Cross multiply
   1,083.80x = 1,495.71 × 936.78
4. Step 4: Simplify right side
   1,083.80x = 1,401,151.21
5. Step 5: Solve for x
   x = 1,401,151.21/1,083.80
6. Step 6: Final answer
   x = 1,292.82