Finding the Fourth Proportional to 3,167.60, 4,752.89 and 2,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,167.60 : 4,752.89 = 2,128.10 : x
2. Step 2: Convert to fraction form
   3,167.60/4,752.89 = 2,128.10/x
3. Step 3: Cross multiply
   3,167.60x = 4,752.89 × 2,128.10
4. Step 4: Simplify right side
   3,167.60x = 10,114,614.57
5. Step 5: Solve for x
   x = 10,114,614.57/3,167.60
6. Step 6: Final answer
   x = 3,193.15