Finding the Fourth Proportional to 1,353.50, 1,868.18 and 882.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.50 : 1,868.18 = 882.57 : x
2. Step 2: Convert to fraction form
   1,353.50/1,868.18 = 882.57/x
3. Step 3: Cross multiply
   1,353.50x = 1,868.18 × 882.57
4. Step 4: Simplify right side
   1,353.50x = 1,648,799.62
5. Step 5: Solve for x
   x = 1,648,799.62/1,353.50
6. Step 6: Final answer
   x = 1,218.17