Finding the Fourth Proportional to 1,386.46, 1,913.31 and 796.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,386.46 : 1,913.31 = 796.99 : x
2. Step 2: Convert to fraction form
   1,386.46/1,913.31 = 796.99/x
3. Step 3: Cross multiply
   1,386.46x = 1,913.31 × 796.99
4. Step 4: Simplify right side
   1,386.46x = 1,524,888.94
5. Step 5: Solve for x
   x = 1,524,888.94/1,386.46
6. Step 6: Final answer
   x = 1,099.84