Finding the Fourth Proportional to 1,145.22, 1,715.62 and 683.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.22 : 1,715.62 = 683.37 : x
2. Step 2: Convert to fraction form
   1,145.22/1,715.62 = 683.37/x
3. Step 3: Cross multiply
   1,145.22x = 1,715.62 × 683.37
4. Step 4: Simplify right side
   1,145.22x = 1,172,404.73
5. Step 5: Solve for x
   x = 1,172,404.73/1,145.22
6. Step 6: Final answer
   x = 1,023.74