Finding the Fourth Proportional to 1,962.24, 2,707.72 and 1,078

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.24 : 2,707.72 = 1,078 : x
2. Step 2: Convert to fraction form
   1,962.24/2,707.72 = 1,078/x
3. Step 3: Cross multiply
   1,962.24x = 2,707.72 × 1,078
4. Step 4: Simplify right side
   1,962.24x = 2,918,922.16
5. Step 5: Solve for x
   x = 2,918,922.16/1,962.24
6. Step 6: Final answer
   x = 1,487.55