Finding the Fourth Proportional to 2,732.88, 4,098.78 and 784.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,732.88 : 4,098.78 = 784.56 : x
2. Step 2: Convert to fraction form
   2,732.88/4,098.78 = 784.56/x
3. Step 3: Cross multiply
   2,732.88x = 4,098.78 × 784.56
4. Step 4: Simplify right side
   2,732.88x = 3,215,738.84
5. Step 5: Solve for x
   x = 3,215,738.84/2,732.88
6. Step 6: Final answer
   x = 1,176.68