Finding the Fourth Proportional to 1,025.96, 1,415.72 and 583.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,025.96 : 1,415.72 = 583.92 : x
2. Step 2: Convert to fraction form
   1,025.96/1,415.72 = 583.92/x
3. Step 3: Cross multiply
   1,025.96x = 1,415.72 × 583.92
4. Step 4: Simplify right side
   1,025.96x = 826,667.22
5. Step 5: Solve for x
   x = 826,667.22/1,025.96
6. Step 6: Final answer
   x = 805.75