Finding the Fourth Proportional to 1,348.05, 1,860.05 and 816.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,348.05 : 1,860.05 = 816.83 : x
2. Step 2: Convert to fraction form
   1,348.05/1,860.05 = 816.83/x
3. Step 3: Cross multiply
   1,348.05x = 1,860.05 × 816.83
4. Step 4: Simplify right side
   1,348.05x = 1,519,337.38
5. Step 5: Solve for x
   x = 1,519,337.38/1,348.05
6. Step 6: Final answer
   x = 1,127.06