Finding the Fourth Proportional to 3,681.05, 5,078.70 and 2,108.84

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.05 : 5,078.70 = 2,108.84 : x
2. Step 2: Convert to fraction form
   3,681.05/5,078.70 = 2,108.84/x
3. Step 3: Cross multiply
   3,681.05x = 5,078.70 × 2,108.84
4. Step 4: Simplify right side
   3,681.05x = 10,710,140.31
5. Step 5: Solve for x
   x = 10,710,140.31/3,681.05
6. Step 6: Final answer
   x = 2,909.54