Finding the Fourth Proportional to 2,172.33, 2,999.34 and 1,674.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.33 : 2,999.34 = 1,674.18 : x
2. Step 2: Convert to fraction form
   2,172.33/2,999.34 = 1,674.18/x
3. Step 3: Cross multiply
   2,172.33x = 2,999.34 × 1,674.18
4. Step 4: Simplify right side
   2,172.33x = 5,021,435.04
5. Step 5: Solve for x
   x = 5,021,435.04/2,172.33
6. Step 6: Final answer
   x = 2,311.54