Finding the Fourth Proportional to 1,063.46, 1,467.69 and 621.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,063.46 : 1,467.69 = 621.51 : x
2. Step 2: Convert to fraction form
   1,063.46/1,467.69 = 621.51/x
3. Step 3: Cross multiply
   1,063.46x = 1,467.69 × 621.51
4. Step 4: Simplify right side
   1,063.46x = 912,176.18
5. Step 5: Solve for x
   x = 912,176.18/1,063.46
6. Step 6: Final answer
   x = 857.74