Finding the Fourth Proportional to 998.61, 1,488.38 and 968.82

Step by Step Solution

1. Step 1: Write the proportion equation
   998.61 : 1,488.38 = 968.82 : x
2. Step 2: Convert to fraction form
   998.61/1,488.38 = 968.82/x
3. Step 3: Cross multiply
   998.61x = 1,488.38 × 968.82
4. Step 4: Simplify right side
   998.61x = 1,441,972.31
5. Step 5: Solve for x
   x = 1,441,972.31/998.61
6. Step 6: Final answer
   x = 1,443.98