Finding the Fourth Proportional to 1,385.27, 2,063.31 and 1,356.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.27 : 2,063.31 = 1,356.43 : x
2. Step 2: Convert to fraction form
   1,385.27/2,063.31 = 1,356.43/x
3. Step 3: Cross multiply
   1,385.27x = 2,063.31 × 1,356.43
4. Step 4: Simplify right side
   1,385.27x = 2,798,727.03
5. Step 5: Solve for x
   x = 2,798,727.03/1,385.27
6. Step 6: Final answer
   x = 2,020.35