Finding the Fourth Proportional to 3,681.39, 5,080.29 and 2,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,681.39 : 5,080.29 = 2,109.48 : x
2. Step 2: Convert to fraction form
   3,681.39/5,080.29 = 2,109.48/x
3. Step 3: Cross multiply
   3,681.39x = 5,080.29 × 2,109.48
4. Step 4: Simplify right side
   3,681.39x = 10,716,770.15
5. Step 5: Solve for x
   x = 10,716,770.15/3,681.39
6. Step 6: Final answer
   x = 2,911.07