Finding the Fourth Proportional to 1,050.82, 1,576.01 and 998.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.82 : 1,576.01 = 998.78 : x
2. Step 2: Convert to fraction form
   1,050.82/1,576.01 = 998.78/x
3. Step 3: Cross multiply
   1,050.82x = 1,576.01 × 998.78
4. Step 4: Simplify right side
   1,050.82x = 1,574,087.27
5. Step 5: Solve for x
   x = 1,574,087.27/1,050.82
6. Step 6: Final answer
   x = 1,497.96