Finding the Fourth Proportional to 1,034.73, 1,426.28 and 720.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,034.73 : 1,426.28 = 720.45 : x
2. Step 2: Convert to fraction form
   1,034.73/1,426.28 = 720.45/x
3. Step 3: Cross multiply
   1,034.73x = 1,426.28 × 720.45
4. Step 4: Simplify right side
   1,034.73x = 1,027,559.82
5. Step 5: Solve for x
   x = 1,027,559.82/1,034.73
6. Step 6: Final answer
   x = 993.07