Finding the Fourth Proportional to 1,025.82, 1,415.28 and 583.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.82 : 1,415.28 = 583.56 : x
2. Step 2: Convert to fraction form
   1,025.82/1,415.28 = 583.56/x
3. Step 3: Cross multiply
   1,025.82x = 1,415.28 × 583.56
4. Step 4: Simplify right side
   1,025.82x = 825,900.80
5. Step 5: Solve for x
   x = 825,900.80/1,025.82
6. Step 6: Final answer
   x = 805.11