Finding the Fourth Proportional to 1,411.34, 1,948.38 and 880.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.34 : 1,948.38 = 880.39 : x
2. Step 2: Convert to fraction form
   1,411.34/1,948.38 = 880.39/x
3. Step 3: Cross multiply
   1,411.34x = 1,948.38 × 880.39
4. Step 4: Simplify right side
   1,411.34x = 1,715,334.27
5. Step 5: Solve for x
   x = 1,715,334.27/1,411.34
6. Step 6: Final answer
   x = 1,215.39