Finding the Fourth Proportional to 1,181.03, 1,630.18 and 683.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,181.03 : 1,630.18 = 683.89 : x
2. Step 2: Convert to fraction form
   1,181.03/1,630.18 = 683.89/x
3. Step 3: Cross multiply
   1,181.03x = 1,630.18 × 683.89
4. Step 4: Simplify right side
   1,181.03x = 1,114,865.90
5. Step 5: Solve for x
   x = 1,114,865.90/1,181.03
6. Step 6: Final answer
   x = 943.98