Finding the Fourth Proportional to 1,243.06, 1,715.42 and 683.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243.06 : 1,715.42 = 683.53 : x
2. Step 2: Convert to fraction form
   1,243.06/1,715.42 = 683.53/x
3. Step 3: Cross multiply
   1,243.06x = 1,715.42 × 683.53
4. Step 4: Simplify right side
   1,243.06x = 1,172,538.45
5. Step 5: Solve for x
   x = 1,172,538.45/1,243.06
6. Step 6: Final answer
   x = 943.27