Finding the Fourth Proportional to 1,146.15, 1,581.71 and 674.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.15 : 1,581.71 = 674.07 : x
2. Step 2: Convert to fraction form
   1,146.15/1,581.71 = 674.07/x
3. Step 3: Cross multiply
   1,146.15x = 1,581.71 × 674.07
4. Step 4: Simplify right side
   1,146.15x = 1,066,188.90
5. Step 5: Solve for x
   x = 1,066,188.90/1,146.15
6. Step 6: Final answer
   x = 930.24