Finding the Fourth Proportional to 1,962.84, 2,708.78 and 1,078.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,962.84 : 2,708.78 = 1,078.76 : x
2. Step 2: Convert to fraction form
   1,962.84/2,708.78 = 1,078.76/x
3. Step 3: Cross multiply
   1,962.84x = 2,708.78 × 1,078.76
4. Step 4: Simplify right side
   1,962.84x = 2,922,123.51
5. Step 5: Solve for x
   x = 2,922,123.51/1,962.84
6. Step 6: Final answer
   x = 1,488.72