Finding the Fourth Proportional to 1,915.46, 2,643.27 and 1,087.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.46 : 2,643.27 = 1,087.46 : x
2. Step 2: Convert to fraction form
   1,915.46/2,643.27 = 1,087.46/x
3. Step 3: Cross multiply
   1,915.46x = 2,643.27 × 1,087.46
4. Step 4: Simplify right side
   1,915.46x = 2,874,450.39
5. Step 5: Solve for x
   x = 2,874,450.39/1,915.46
6. Step 6: Final answer
   x = 1,500.66