Finding the Fourth Proportional to 3,454.34, 4,764.65 and 2,128.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,454.34 : 4,764.65 = 2,128.82 : x
2. Step 2: Convert to fraction form
   3,454.34/4,764.65 = 2,128.82/x
3. Step 3: Cross multiply
   3,454.34x = 4,764.65 × 2,128.82
4. Step 4: Simplify right side
   3,454.34x = 10,143,047.75
5. Step 5: Solve for x
   x = 10,143,047.75/3,454.34
6. Step 6: Final answer
   x = 2,936.32