Finding the Fourth Proportional to 1,385.40, 1,911.84 and 796.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,385.40 : 1,911.84 = 796.26 : x
2. Step 2: Convert to fraction form
   1,385.40/1,911.84 = 796.26/x
3. Step 3: Cross multiply
   1,385.40x = 1,911.84 × 796.26
4. Step 4: Simplify right side
   1,385.40x = 1,522,321.72
5. Step 5: Solve for x
   x = 1,522,321.72/1,385.40
6. Step 6: Final answer
   x = 1,098.83