Finding the Fourth Proportional to 1,442.67, 1,990.32 and 882.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.67 : 1,990.32 = 882.69 : x
2. Step 2: Convert to fraction form
   1,442.67/1,990.32 = 882.69/x
3. Step 3: Cross multiply
   1,442.67x = 1,990.32 × 882.69
4. Step 4: Simplify right side
   1,442.67x = 1,756,835.56
5. Step 5: Solve for x
   x = 1,756,835.56/1,442.67
6. Step 6: Final answer
   x = 1,217.77