Finding the Fourth Proportional to 2,109.84, 3,164.74 and 723.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,109.84 : 3,164.74 = 723.16 : x
2. Step 2: Convert to fraction form
   2,109.84/3,164.74 = 723.16/x
3. Step 3: Cross multiply
   2,109.84x = 3,164.74 × 723.16
4. Step 4: Simplify right side
   2,109.84x = 2,288,613.38
5. Step 5: Solve for x
   x = 2,288,613.38/2,109.84
6. Step 6: Final answer
   x = 1,084.73