Finding the Fourth Proportional to 1,064.02, 1,467.97 and 621.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064.02 : 1,467.97 = 621.86 : x
2. Step 2: Convert to fraction form
   1,064.02/1,467.97 = 621.86/x
3. Step 3: Cross multiply
   1,064.02x = 1,467.97 × 621.86
4. Step 4: Simplify right side
   1,064.02x = 912,871.82
5. Step 5: Solve for x
   x = 912,871.82/1,064.02
6. Step 6: Final answer
   x = 857.95