Finding the Fourth Proportional to 1,062.24, 1,465.89 and 620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.24 : 1,465.89 = 620.15 : x
2. Step 2: Convert to fraction form
   1,062.24/1,465.89 = 620.15/x
3. Step 3: Cross multiply
   1,062.24x = 1,465.89 × 620.15
4. Step 4: Simplify right side
   1,062.24x = 909,064.35
5. Step 5: Solve for x
   x = 909,064.35/1,062.24
6. Step 6: Final answer
   x = 855.80