Finding the Fourth Proportional to 3,679.59, 5,077.83 and 2,107.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.59 : 5,077.83 = 2,107.69 : x
2. Step 2: Convert to fraction form
   3,679.59/5,077.83 = 2,107.69/x
3. Step 3: Cross multiply
   3,679.59x = 5,077.83 × 2,107.69
4. Step 4: Simplify right side
   3,679.59x = 10,702,491.51
5. Step 5: Solve for x
   x = 10,702,491.51/3,679.59
6. Step 6: Final answer
   x = 2,908.61