Finding the Fourth Proportional to 3,681.52, 5,080.52 and 2,109.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.52 : 5,080.52 = 2,109.56 : x
2. Step 2: Convert to fraction form
   3,681.52/5,080.52 = 2,109.56/x
3. Step 3: Cross multiply
   3,681.52x = 5,080.52 × 2,109.56
4. Step 4: Simplify right side
   3,681.52x = 10,717,661.77
5. Step 5: Solve for x
   x = 10,717,661.77/3,681.52
6. Step 6: Final answer
   x = 2,911.21