Finding the Fourth Proportional to 1,083.33, 1,623.69 and 620.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.33 : 1,623.69 = 620.22 : x
2. Step 2: Convert to fraction form
   1,083.33/1,623.69 = 620.22/x
3. Step 3: Cross multiply
   1,083.33x = 1,623.69 × 620.22
4. Step 4: Simplify right side
   1,083.33x = 1,007,045.01
5. Step 5: Solve for x
   x = 1,007,045.01/1,083.33
6. Step 6: Final answer
   x = 929.58