Finding the Fourth Proportional to 1,147.30, 1,583.18 and 681.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,147.30 : 1,583.18 = 681.54 : x
2. Step 2: Convert to fraction form
   1,147.30/1,583.18 = 681.54/x
3. Step 3: Cross multiply
   1,147.30x = 1,583.18 × 681.54
4. Step 4: Simplify right side
   1,147.30x = 1,079,000.50
5. Step 5: Solve for x
   x = 1,079,000.50/1,147.30
6. Step 6: Final answer
   x = 940.47