Finding the Fourth Proportional to 3,870.95, 5,341.85 and 2,102.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.95 : 5,341.85 = 2,102.54 : x
2. Step 2: Convert to fraction form
   3,870.95/5,341.85 = 2,102.54/x
3. Step 3: Cross multiply
   3,870.95x = 5,341.85 × 2,102.54
4. Step 4: Simplify right side
   3,870.95x = 11,231,453.30
5. Step 5: Solve for x
   x = 11,231,453.30/3,870.95
6. Step 6: Final answer
   x = 2,901.47