Finding the Fourth Proportional to 2,073.39, 3,109.10 and 756.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.39 : 3,109.10 = 756.21 : x
2. Step 2: Convert to fraction form
   2,073.39/3,109.10 = 756.21/x
3. Step 3: Cross multiply
   2,073.39x = 3,109.10 × 756.21
4. Step 4: Simplify right side
   2,073.39x = 2,351,128.73
5. Step 5: Solve for x
   x = 2,351,128.73/2,073.39
6. Step 6: Final answer
   x = 1,133.95