Finding the Fourth Proportional to 1,915.75, 2,868.99 and 1,091.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.75 : 2,868.99 = 1,091.52 : x
2. Step 2: Convert to fraction form
   1,915.75/2,868.99 = 1,091.52/x
3. Step 3: Cross multiply
   1,915.75x = 2,868.99 × 1,091.52
4. Step 4: Simplify right side
   1,915.75x = 3,131,559.96
5. Step 5: Solve for x
   x = 3,131,559.96/1,915.75
6. Step 6: Final answer
   x = 1,634.64