Finding the Fourth Proportional to 1,146.48, 1,581.96 and 674.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.48 : 1,581.96 = 674.40 : x
2. Step 2: Convert to fraction form
   1,146.48/1,581.96 = 674.40/x
3. Step 3: Cross multiply
   1,146.48x = 1,581.96 × 674.40
4. Step 4: Simplify right side
   1,146.48x = 1,066,873.82
5. Step 5: Solve for x
   x = 1,066,873.82/1,146.48
6. Step 6: Final answer
   x = 930.56