Finding the Fourth Proportional to 1,107.05, 1,526.82 and 808.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,107.05 : 1,526.82 = 808.31 : x
2. Step 2: Convert to fraction form
   1,107.05/1,526.82 = 808.31/x
3. Step 3: Cross multiply
   1,107.05x = 1,526.82 × 808.31
4. Step 4: Simplify right side
   1,107.05x = 1,234,143.87
5. Step 5: Solve for x
   x = 1,234,143.87/1,107.05
6. Step 6: Final answer
   x = 1,114.80