Finding the Fourth Proportional to 1,062.68, 1,466.61 and 620.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.68 : 1,466.61 = 620.72 : x
2. Step 2: Convert to fraction form
   1,062.68/1,466.61 = 620.72/x
3. Step 3: Cross multiply
   1,062.68x = 1,466.61 × 620.72
4. Step 4: Simplify right side
   1,062.68x = 910,351.06
5. Step 5: Solve for x
   x = 910,351.06/1,062.68
6. Step 6: Final answer
   x = 856.66