Finding the Fourth Proportional to 1,385.96, 1,913.04 and 796.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.96 : 1,913.04 = 796.88 : x
2. Step 2: Convert to fraction form
   1,385.96/1,913.04 = 796.88/x
3. Step 3: Cross multiply
   1,385.96x = 1,913.04 × 796.88
4. Step 4: Simplify right side
   1,385.96x = 1,524,468.10
5. Step 5: Solve for x
   x = 1,524,468.10/1,385.96
6. Step 6: Final answer
   x = 1,099.94