Finding the Fourth Proportional to 3,810.48, 5,258.62 and 2,131.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.48 : 5,258.62 = 2,131.89 : x
2. Step 2: Convert to fraction form
   3,810.48/5,258.62 = 2,131.89/x
3. Step 3: Cross multiply
   3,810.48x = 5,258.62 × 2,131.89
4. Step 4: Simplify right side
   3,810.48x = 11,210,782.34
5. Step 5: Solve for x
   x = 11,210,782.34/3,810.48
6. Step 6: Final answer
   x = 2,942.09