Finding the Fourth Proportional to 1,683.40, 2,316.18 and 1,644.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.40 : 2,316.18 = 1,644.52 : x
2. Step 2: Convert to fraction form
   1,683.40/2,316.18 = 1,644.52/x
3. Step 3: Cross multiply
   1,683.40x = 2,316.18 × 1,644.52
4. Step 4: Simplify right side
   1,683.40x = 3,809,004.33
5. Step 5: Solve for x
   x = 3,809,004.33/1,683.40
6. Step 6: Final answer
   x = 2,262.69