Finding the Fourth Proportional to 1,140.39, 1,573.83 and 674.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.39 : 1,573.83 = 674.73 : x
2. Step 2: Convert to fraction form
   1,140.39/1,573.83 = 674.73/x
3. Step 3: Cross multiply
   1,140.39x = 1,573.83 × 674.73
4. Step 4: Simplify right side
   1,140.39x = 1,061,910.32
5. Step 5: Solve for x
   x = 1,061,910.32/1,140.39
6. Step 6: Final answer
   x = 931.18