Finding the Fourth Proportional to 1,340.46, 1,849.77 and 816.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.46 : 1,849.77 = 816.39 : x
2. Step 2: Convert to fraction form
   1,340.46/1,849.77 = 816.39/x
3. Step 3: Cross multiply
   1,340.46x = 1,849.77 × 816.39
4. Step 4: Simplify right side
   1,340.46x = 1,510,133.73
5. Step 5: Solve for x
   x = 1,510,133.73/1,340.46
6. Step 6: Final answer
   x = 1,126.58