Finding the Fourth Proportional to 1,333.53, 1,997.51 and 682.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.53 : 1,997.51 = 682.88 : x
2. Step 2: Convert to fraction form
   1,333.53/1,997.51 = 682.88/x
3. Step 3: Cross multiply
   1,333.53x = 1,997.51 × 682.88
4. Step 4: Simplify right side
   1,333.53x = 1,364,046.23
5. Step 5: Solve for x
   x = 1,364,046.23/1,333.53
6. Step 6: Final answer
   x = 1,022.88