Finding the Fourth Proportional to 1,947.39, 2,921.94 and 1,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,947.39 : 2,921.94 = 1,022.72 : x
2. Step 2: Convert to fraction form
   1,947.39/2,921.94 = 1,022.72/x
3. Step 3: Cross multiply
   1,947.39x = 2,921.94 × 1,022.72
4. Step 4: Simplify right side
   1,947.39x = 2,988,311.87
5. Step 5: Solve for x
   x = 2,988,311.87/1,947.39
6. Step 6: Final answer
   x = 1,534.52