Finding the Fourth Proportional to 1,063.34, 1,467.50 and 621.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.34 : 1,467.50 = 621.39 : x
2. Step 2: Convert to fraction form
   1,063.34/1,467.50 = 621.39/x
3. Step 3: Cross multiply
   1,063.34x = 1,467.50 × 621.39
4. Step 4: Simplify right side
   1,063.34x = 911,889.83
5. Step 5: Solve for x
   x = 911,889.83/1,063.34
6. Step 6: Final answer
   x = 857.57