Finding the Fourth Proportional to 1,947.33, 2,686.83 and 1,107.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.33 : 2,686.83 = 1,107.87 : x
2. Step 2: Convert to fraction form
   1,947.33/2,686.83 = 1,107.87/x
3. Step 3: Cross multiply
   1,947.33x = 2,686.83 × 1,107.87
4. Step 4: Simplify right side
   1,947.33x = 2,976,658.35
5. Step 5: Solve for x
   x = 2,976,658.35/1,947.33
6. Step 6: Final answer
   x = 1,528.58