Finding the Fourth Proportional to 3,872.31, 5,343.81 and 2,103.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872.31 : 5,343.81 = 2,103.93 : x
2. Step 2: Convert to fraction form
   3,872.31/5,343.81 = 2,103.93/x
3. Step 3: Cross multiply
   3,872.31x = 5,343.81 × 2,103.93
4. Step 4: Simplify right side
   3,872.31x = 11,243,002.17
5. Step 5: Solve for x
   x = 11,243,002.17/3,872.31
6. Step 6: Final answer
   x = 2,903.44