Finding the Fourth Proportional to 1,683.36, 2,321.82 and 1,053.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.36 : 2,321.82 = 1,053.18 : x
2. Step 2: Convert to fraction form
   1,683.36/2,321.82 = 1,053.18/x
3. Step 3: Cross multiply
   1,683.36x = 2,321.82 × 1,053.18
4. Step 4: Simplify right side
   1,683.36x = 2,445,294.39
5. Step 5: Solve for x
   x = 2,445,294.39/1,683.36
6. Step 6: Final answer
   x = 1,452.63