Finding the Fourth Proportional to 1,092.20, 1,637.69 and 361.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.20 : 1,637.69 = 361.37 : x
2. Step 2: Convert to fraction form
   1,092.20/1,637.69 = 361.37/x
3. Step 3: Cross multiply
   1,092.20x = 1,637.69 × 361.37
4. Step 4: Simplify right side
   1,092.20x = 591,814.32
5. Step 5: Solve for x
   x = 591,814.32/1,092.20
6. Step 6: Final answer
   x = 541.86