Finding the Fourth Proportional to 1,087.42, 1,630.67 and 356.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.42 : 1,630.67 = 356.82 : x
2. Step 2: Convert to fraction form
   1,087.42/1,630.67 = 356.82/x
3. Step 3: Cross multiply
   1,087.42x = 1,630.67 × 356.82
4. Step 4: Simplify right side
   1,087.42x = 581,853.89
5. Step 5: Solve for x
   x = 581,853.89/1,087.42
6. Step 6: Final answer
   x = 535.08