Finding the Fourth Proportional to 1,411.33, 1,948.60 and 880.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.33 : 1,948.60 = 880.42 : x
2. Step 2: Convert to fraction form
   1,411.33/1,948.60 = 880.42/x
3. Step 3: Cross multiply
   1,411.33x = 1,948.60 × 880.42
4. Step 4: Simplify right side
   1,411.33x = 1,715,586.41
5. Step 5: Solve for x
   x = 1,715,586.41/1,411.33
6. Step 6: Final answer
   x = 1,215.58