Finding the Fourth Proportional to 1,385.98, 1,913.28 and 882.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.98 : 1,913.28 = 882.04 : x
2. Step 2: Convert to fraction form
   1,385.98/1,913.28 = 882.04/x
3. Step 3: Cross multiply
   1,385.98x = 1,913.28 × 882.04
4. Step 4: Simplify right side
   1,385.98x = 1,687,589.49
5. Step 5: Solve for x
   x = 1,687,589.49/1,385.98
6. Step 6: Final answer
   x = 1,217.61