Finding the Fourth Proportional to 1,411.84, 1,947 and 1,080.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.84 : 1,947 = 1,080.28 : x
2. Step 2: Convert to fraction form
   1,411.84/1,947 = 1,080.28/x
3. Step 3: Cross multiply
   1,411.84x = 1,947 × 1,080.28
4. Step 4: Simplify right side
   1,411.84x = 2,103,305.16
5. Step 5: Solve for x
   x = 2,103,305.16/1,411.84
6. Step 6: Final answer
   x = 1,489.76