Finding the Fourth Proportional to 1,145.43, 1,706.88 and 1,076.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145.43 : 1,706.88 = 1,076.18 : x
2. Step 2: Convert to fraction form
   1,145.43/1,706.88 = 1,076.18/x
3. Step 3: Cross multiply
   1,145.43x = 1,706.88 × 1,076.18
4. Step 4: Simplify right side
   1,145.43x = 1,836,901.58
5. Step 5: Solve for x
   x = 1,836,901.58/1,145.43
6. Step 6: Final answer
   x = 1,603.68