Finding the Fourth Proportional to 1,086.50, 1,630.02 and 356.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.50 : 1,630.02 = 356.06 : x
2. Step 2: Convert to fraction form
   1,086.50/1,630.02 = 356.06/x
3. Step 3: Cross multiply
   1,086.50x = 1,630.02 × 356.06
4. Step 4: Simplify right side
   1,086.50x = 580,384.92
5. Step 5: Solve for x
   x = 580,384.92/1,086.50
6. Step 6: Final answer
   x = 534.18