Finding the Fourth Proportional to 2,189.30, 3,005.06 and 1,947.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.30 : 3,005.06 = 1,947.96 : x
2. Step 2: Convert to fraction form
   2,189.30/3,005.06 = 1,947.96/x
3. Step 3: Cross multiply
   2,189.30x = 3,005.06 × 1,947.96
4. Step 4: Simplify right side
   2,189.30x = 5,853,726.94
5. Step 5: Solve for x
   x = 5,853,726.94/2,189.30
6. Step 6: Final answer
   x = 2,673.80