Finding the Fourth Proportional to 2,947.82, 4,067.78 and 1,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.82 : 4,067.78 = 1,621.50 : x
2. Step 2: Convert to fraction form
   2,947.82/4,067.78 = 1,621.50/x
3. Step 3: Cross multiply
   2,947.82x = 4,067.78 × 1,621.50
4. Step 4: Simplify right side
   2,947.82x = 6,595,905.27
5. Step 5: Solve for x
   x = 6,595,905.27/2,947.82
6. Step 6: Final answer
   x = 2,237.55