Finding the Fourth Proportional to 1,340.59, 2,011.46 and 724.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.59 : 2,011.46 = 724.73 : x
2. Step 2: Convert to fraction form
   1,340.59/2,011.46 = 724.73/x
3. Step 3: Cross multiply
   1,340.59x = 2,011.46 × 724.73
4. Step 4: Simplify right side
   1,340.59x = 1,457,751.72
5. Step 5: Solve for x
   x = 1,457,751.72/1,340.59
6. Step 6: Final answer
   x = 1,087.40