Finding the Fourth Proportional to 1,996.10, 2,993.55 and 826.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,996.10 : 2,993.55 = 826.07 : x
2. Step 2: Convert to fraction form
   1,996.10/2,993.55 = 826.07/x
3. Step 3: Cross multiply
   1,996.10x = 2,993.55 × 826.07
4. Step 4: Simplify right side
   1,996.10x = 2,472,881.85
5. Step 5: Solve for x
   x = 2,472,881.85/1,996.10
6. Step 6: Final answer
   x = 1,238.86