Finding the Fourth Proportional to 1,333.27, 2,010.06 and 1,239.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.27 : 2,010.06 = 1,239.31 : x
2. Step 2: Convert to fraction form
   1,333.27/2,010.06 = 1,239.31/x
3. Step 3: Cross multiply
   1,333.27x = 2,010.06 × 1,239.31
4. Step 4: Simplify right side
   1,333.27x = 2,491,087.46
5. Step 5: Solve for x
   x = 2,491,087.46/1,333.27
6. Step 6: Final answer
   x = 1,868.40