Finding the Fourth Proportional to 1,683.72, 2,323.72 and 1,020.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.72 : 2,323.72 = 1,020.60 : x
2. Step 2: Convert to fraction form
   1,683.72/2,323.72 = 1,020.60/x
3. Step 3: Cross multiply
   1,683.72x = 2,323.72 × 1,020.60
4. Step 4: Simplify right side
   1,683.72x = 2,371,588.63
5. Step 5: Solve for x
   x = 2,371,588.63/1,683.72
6. Step 6: Final answer
   x = 1,408.54