Finding the Fourth Proportional to 1,947.84, 2,688.56 and 1,109

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.84 : 2,688.56 = 1,109 : x
2. Step 2: Convert to fraction form
   1,947.84/2,688.56 = 1,109/x
3. Step 3: Cross multiply
   1,947.84x = 2,688.56 × 1,109
4. Step 4: Simplify right side
   1,947.84x = 2,981,613.04
5. Step 5: Solve for x
   x = 2,981,613.04/1,947.84
6. Step 6: Final answer
   x = 1,530.73