Finding the Fourth Proportional to 1,966.98, 2,714.89 and 1,128.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,966.98 : 2,714.89 = 1,128.17 : x
2. Step 2: Convert to fraction form
   1,966.98/2,714.89 = 1,128.17/x
3. Step 3: Cross multiply
   1,966.98x = 2,714.89 × 1,128.17
4. Step 4: Simplify right side
   1,966.98x = 3,062,857.45
5. Step 5: Solve for x
   x = 3,062,857.45/1,966.98
6. Step 6: Final answer
   x = 1,557.14