Finding the Fourth Proportional to 1,222.33, 1,686.82 and 725.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222.33 : 1,686.82 = 725.00 : x
2. Step 2: Convert to fraction form
   1,222.33/1,686.82 = 725.00/x
3. Step 3: Cross multiply
   1,222.33x = 1,686.82 × 725.00
4. Step 4: Simplify right side
   1,222.33x = 1,222,943.06
5. Step 5: Solve for x
   x = 1,222,943.06/1,222.33
6. Step 6: Final answer
   x = 1,000.50