Finding the Fourth Proportional to 1,865.30, 2,795.99 and 768.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.30 : 2,795.99 = 768.15 : x
2. Step 2: Convert to fraction form
   1,865.30/2,795.99 = 768.15/x
3. Step 3: Cross multiply
   1,865.30x = 2,795.99 × 768.15
4. Step 4: Simplify right side
   1,865.30x = 2,147,735.88
5. Step 5: Solve for x
   x = 2,147,735.88/1,865.30
6. Step 6: Final answer
   x = 1,151.42