Finding the Fourth Proportional to 1,333.09, 1,997.88 and 684.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.09 : 1,997.88 = 684.28 : x
2. Step 2: Convert to fraction form
   1,333.09/1,997.88 = 684.28/x
3. Step 3: Cross multiply
   1,333.09x = 1,997.88 × 684.28
4. Step 4: Simplify right side
   1,333.09x = 1,367,109.33
5. Step 5: Solve for x
   x = 1,367,109.33/1,333.09
6. Step 6: Final answer
   x = 1,025.52