Finding the Fourth Proportional to 1,411.46, 1,948.76 and 880.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.46 : 1,948.76 = 880.56 : x
2. Step 2: Convert to fraction form
   1,411.46/1,948.76 = 880.56/x
3. Step 3: Cross multiply
   1,411.46x = 1,948.76 × 880.56
4. Step 4: Simplify right side
   1,411.46x = 1,716,000.11
5. Step 5: Solve for x
   x = 1,716,000.11/1,411.46
6. Step 6: Final answer
   x = 1,215.76