Finding the Fourth Proportional to 1,086.77, 1,630.56 and 502.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.77 : 1,630.56 = 502.05 : x
2. Step 2: Convert to fraction form
   1,086.77/1,630.56 = 502.05/x
3. Step 3: Cross multiply
   1,086.77x = 1,630.56 × 502.05
4. Step 4: Simplify right side
   1,086.77x = 818,628.76
5. Step 5: Solve for x
   x = 818,628.76/1,086.77
6. Step 6: Final answer
   x = 753.27