Finding the Fourth Proportional to 1,146.32, 1,582.27 and 680.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.32 : 1,582.27 = 680.48 : x
2. Step 2: Convert to fraction form
   1,146.32/1,582.27 = 680.48/x
3. Step 3: Cross multiply
   1,146.32x = 1,582.27 × 680.48
4. Step 4: Simplify right side
   1,146.32x = 1,076,695.18
5. Step 5: Solve for x
   x = 1,076,695.18/1,146.32
6. Step 6: Final answer
   x = 939.27