Finding the Fourth Proportional to 3,810.75, 5,258.72 and 2,132.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.75 : 5,258.72 = 2,132.30 : x
2. Step 2: Convert to fraction form
   3,810.75/5,258.72 = 2,132.30/x
3. Step 3: Cross multiply
   3,810.75x = 5,258.72 × 2,132.30
4. Step 4: Simplify right side
   3,810.75x = 11,213,131.70
5. Step 5: Solve for x
   x = 11,213,131.70/3,810.75
6. Step 6: Final answer
   x = 2,942.50