Finding the Fourth Proportional to 1,435.52, 2,153.18 and 395.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.52 : 2,153.18 = 395.69 : x
2. Step 2: Convert to fraction form
   1,435.52/2,153.18 = 395.69/x
3. Step 3: Cross multiply
   1,435.52x = 2,153.18 × 395.69
4. Step 4: Simplify right side
   1,435.52x = 851,982.02
5. Step 5: Solve for x
   x = 851,982.02/1,435.52
6. Step 6: Final answer
   x = 593.50