Finding the Fourth Proportional to 1,116.45, 1,540.71 and 674.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.45 : 1,540.71 = 674.37 : x
2. Step 2: Convert to fraction form
   1,116.45/1,540.71 = 674.37/x
3. Step 3: Cross multiply
   1,116.45x = 1,540.71 × 674.37
4. Step 4: Simplify right side
   1,116.45x = 1,039,008.60
5. Step 5: Solve for x
   x = 1,039,008.60/1,116.45
6. Step 6: Final answer
   x = 930.64