Finding the Fourth Proportional to 2,947.94, 4,068.18 and 1,621.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.94 : 4,068.18 = 1,621.61 : x
2. Step 2: Convert to fraction form
   2,947.94/4,068.18 = 1,621.61/x
3. Step 3: Cross multiply
   2,947.94x = 4,068.18 × 1,621.61
4. Step 4: Simplify right side
   2,947.94x = 6,597,011.54
5. Step 5: Solve for x
   x = 6,597,011.54/2,947.94
6. Step 6: Final answer
   x = 2,237.84