Finding the Fourth Proportional to 1,308.82, 1,804.83 and 910.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.82 : 1,804.83 = 910.94 : x
2. Step 2: Convert to fraction form
   1,308.82/1,804.83 = 910.94/x
3. Step 3: Cross multiply
   1,308.82x = 1,804.83 × 910.94
4. Step 4: Simplify right side
   1,308.82x = 1,644,091.84
5. Step 5: Solve for x
   x = 1,644,091.84/1,308.82
6. Step 6: Final answer
   x = 1,256.16