Finding the Fourth Proportional to 2,109.28, 3,161.35 and 1,493.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.28 : 3,161.35 = 1,493.16 : x
2. Step 2: Convert to fraction form
   2,109.28/3,161.35 = 1,493.16/x
3. Step 3: Cross multiply
   2,109.28x = 3,161.35 × 1,493.16
4. Step 4: Simplify right side
   2,109.28x = 4,720,401.37
5. Step 5: Solve for x
   x = 4,720,401.37/2,109.28
6. Step 6: Final answer
   x = 2,237.92