Finding the Fourth Proportional to 1,385.55, 1,912.32 and 796.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.55 : 1,912.32 = 796.47 : x
2. Step 2: Convert to fraction form
   1,385.55/1,912.32 = 796.47/x
3. Step 3: Cross multiply
   1,385.55x = 1,912.32 × 796.47
4. Step 4: Simplify right side
   1,385.55x = 1,523,105.51
5. Step 5: Solve for x
   x = 1,523,105.51/1,385.55
6. Step 6: Final answer
   x = 1,099.28