Finding the Fourth Proportional to 2,947.47, 4,063.29 and 2,107.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,947.47 : 4,063.29 = 2,107.86 : x
2. Step 2: Convert to fraction form
   2,947.47/4,063.29 = 2,107.86/x
3. Step 3: Cross multiply
   2,947.47x = 4,063.29 × 2,107.86
4. Step 4: Simplify right side
   2,947.47x = 8,564,846.46
5. Step 5: Solve for x
   x = 8,564,846.46/2,947.47
6. Step 6: Final answer
   x = 2,905.83