Finding the Fourth Proportional to 1,059.28, 1,585.56 and 1,018.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.28 : 1,585.56 = 1,018.96 : x
2. Step 2: Convert to fraction form
   1,059.28/1,585.56 = 1,018.96/x
3. Step 3: Cross multiply
   1,059.28x = 1,585.56 × 1,018.96
4. Step 4: Simplify right side
   1,059.28x = 1,615,622.22
5. Step 5: Solve for x
   x = 1,615,622.22/1,059.28
6. Step 6: Final answer
   x = 1,525.21