Finding the Fourth Proportional to 3,870.96, 5,341.94 and 2,102.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.96 : 5,341.94 = 2,102.60 : x
2. Step 2: Convert to fraction form
   3,870.96/5,341.94 = 2,102.60/x
3. Step 3: Cross multiply
   3,870.96x = 5,341.94 × 2,102.60
4. Step 4: Simplify right side
   3,870.96x = 11,231,963.04
5. Step 5: Solve for x
   x = 11,231,963.04/3,870.96
6. Step 6: Final answer
   x = 2,901.60