Finding the Fourth Proportional to 1,086.48, 1,628.91 and 565.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.48 : 1,628.91 = 565.83 : x
2. Step 2: Convert to fraction form
   1,086.48/1,628.91 = 565.83/x
3. Step 3: Cross multiply
   1,086.48x = 1,628.91 × 565.83
4. Step 4: Simplify right side
   1,086.48x = 921,686.15
5. Step 5: Solve for x
   x = 921,686.15/1,086.48
6. Step 6: Final answer
   x = 848.32