Finding the Fourth Proportional to 1,382.34, 1,907.46 and 884.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,382.34 : 1,907.46 = 884.79 : x
2. Step 2: Convert to fraction form
   1,382.34/1,907.46 = 884.79/x
3. Step 3: Cross multiply
   1,382.34x = 1,907.46 × 884.79
4. Step 4: Simplify right side
   1,382.34x = 1,687,701.53
5. Step 5: Solve for x
   x = 1,687,701.53/1,382.34
6. Step 6: Final answer
   x = 1,220.90