Finding the Fourth Proportional to 1,008.69, 1,510.15 and 683.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008.69 : 1,510.15 = 683.48 : x
2. Step 2: Convert to fraction form
   1,008.69/1,510.15 = 683.48/x
3. Step 3: Cross multiply
   1,008.69x = 1,510.15 × 683.48
4. Step 4: Simplify right side
   1,008.69x = 1,032,157.32
5. Step 5: Solve for x
   x = 1,032,157.32/1,008.69
6. Step 6: Final answer
   x = 1,023.27