Finding the Fourth Proportional to 3,128.96, 4,696.65 and 2,443.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,128.96 : 4,696.65 = 2,443.25 : x
2. Step 2: Convert to fraction form
   3,128.96/4,696.65 = 2,443.25/x
3. Step 3: Cross multiply
   3,128.96x = 4,696.65 × 2,443.25
4. Step 4: Simplify right side
   3,128.96x = 11,475,066.63
5. Step 5: Solve for x
   x = 11,475,066.63/3,128.96
6. Step 6: Final answer
   x = 3,667.38