Finding the Fourth Proportional to 1,063.43, 1,467.57 and 621.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.43 : 1,467.57 = 621.32 : x
2. Step 2: Convert to fraction form
   1,063.43/1,467.57 = 621.32/x
3. Step 3: Cross multiply
   1,063.43x = 1,467.57 × 621.32
4. Step 4: Simplify right side
   1,063.43x = 911,830.34
5. Step 5: Solve for x
   x = 911,830.34/1,063.43
6. Step 6: Final answer
   x = 857.44