Finding the Fourth Proportional to 1,340.53, 1,849.96 and 816.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.53 : 1,849.96 = 816.25 : x
2. Step 2: Convert to fraction form
   1,340.53/1,849.96 = 816.25/x
3. Step 3: Cross multiply
   1,340.53x = 1,849.96 × 816.25
4. Step 4: Simplify right side
   1,340.53x = 1,510,029.85
5. Step 5: Solve for x
   x = 1,510,029.85/1,340.53
6. Step 6: Final answer
   x = 1,126.45