Finding the Fourth Proportional to 1,947.27, 2,918.55 and 1,429.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.27 : 2,918.55 = 1,429.47 : x
2. Step 2: Convert to fraction form
   1,947.27/2,918.55 = 1,429.47/x
3. Step 3: Cross multiply
   1,947.27x = 2,918.55 × 1,429.47
4. Step 4: Simplify right side
   1,947.27x = 4,171,979.67
5. Step 5: Solve for x
   x = 4,171,979.67/1,947.27
6. Step 6: Final answer
   x = 2,142.48