Finding the Fourth Proportional to 1,998.18, 2,996.82 and 1,266.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998.18 : 2,996.82 = 1,266.72 : x
2. Step 2: Convert to fraction form
   1,998.18/2,996.82 = 1,266.72/x
3. Step 3: Cross multiply
   1,998.18x = 2,996.82 × 1,266.72
4. Step 4: Simplify right side
   1,998.18x = 3,796,131.83
5. Step 5: Solve for x
   x = 3,796,131.83/1,998.18
6. Step 6: Final answer
   x = 1,899.79