Finding the Fourth Proportional to 1,489.98, 2,056.18 and 826.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,489.98 : 2,056.18 = 826.89 : x
2. Step 2: Convert to fraction form
   1,489.98/2,056.18 = 826.89/x
3. Step 3: Cross multiply
   1,489.98x = 2,056.18 × 826.89
4. Step 4: Simplify right side
   1,489.98x = 1,700,241.89
5. Step 5: Solve for x
   x = 1,700,241.89/1,489.98
6. Step 6: Final answer
   x = 1,141.12