Finding the Fourth Proportional to 1,086.07, 1,627.42 and 508.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.07 : 1,627.42 = 508.27 : x
2. Step 2: Convert to fraction form
   1,086.07/1,627.42 = 508.27/x
3. Step 3: Cross multiply
   1,086.07x = 1,627.42 × 508.27
4. Step 4: Simplify right side
   1,086.07x = 827,168.76
5. Step 5: Solve for x
   x = 827,168.76/1,086.07
6. Step 6: Final answer
   x = 761.62