Finding the Fourth Proportional to 1,062.83, 1,466.72 and 621.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.83 : 1,466.72 = 621.02 : x
2. Step 2: Convert to fraction form
   1,062.83/1,466.72 = 621.02/x
3. Step 3: Cross multiply
   1,062.83x = 1,466.72 × 621.02
4. Step 4: Simplify right side
   1,062.83x = 910,862.45
5. Step 5: Solve for x
   x = 910,862.45/1,062.83
6. Step 6: Final answer
   x = 857.02