Finding the Fourth Proportional to 3,870.52, 5,341.23 and 2,102.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.52 : 5,341.23 = 2,102.09 : x
2. Step 2: Convert to fraction form
   3,870.52/5,341.23 = 2,102.09/x
3. Step 3: Cross multiply
   3,870.52x = 5,341.23 × 2,102.09
4. Step 4: Simplify right side
   3,870.52x = 11,227,720.89
5. Step 5: Solve for x
   x = 11,227,720.89/3,870.52
6. Step 6: Final answer
   x = 2,900.83