Finding the Fourth Proportional to 1,800.31, 2,694.37 and 1,107.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,800.31 : 2,694.37 = 1,107.42 : x
2. Step 2: Convert to fraction form
   1,800.31/2,694.37 = 1,107.42/x
3. Step 3: Cross multiply
   1,800.31x = 2,694.37 × 1,107.42
4. Step 4: Simplify right side
   1,800.31x = 2,983,799.23
5. Step 5: Solve for x
   x = 2,983,799.23/1,800.31
6. Step 6: Final answer
   x = 1,657.38