Finding the Fourth Proportional to 1,915.62, 2,643.50 and 1,076.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.62 : 2,643.50 = 1,076.54 : x
2. Step 2: Convert to fraction form
   1,915.62/2,643.50 = 1,076.54/x
3. Step 3: Cross multiply
   1,915.62x = 2,643.50 × 1,076.54
4. Step 4: Simplify right side
   1,915.62x = 2,845,814.89
5. Step 5: Solve for x
   x = 2,845,814.89/1,915.62
6. Step 6: Final answer
   x = 1,485.58