Finding the Fourth Proportional to 3,870.53, 5,341.19 and 2,102.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.53 : 5,341.19 = 2,102.10 : x
2. Step 2: Convert to fraction form
   3,870.53/5,341.19 = 2,102.10/x
3. Step 3: Cross multiply
   3,870.53x = 5,341.19 × 2,102.10
4. Step 4: Simplify right side
   3,870.53x = 11,227,715.50
5. Step 5: Solve for x
   x = 11,227,715.50/3,870.53
6. Step 6: Final answer
   x = 2,900.82