Finding the Fourth Proportional to 1,338.90, 1,847.61 and 841.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.90 : 1,847.61 = 841.38 : x
2. Step 2: Convert to fraction form
   1,338.90/1,847.61 = 841.38/x
3. Step 3: Cross multiply
   1,338.90x = 1,847.61 × 841.38
4. Step 4: Simplify right side
   1,338.90x = 1,554,542.10
5. Step 5: Solve for x
   x = 1,554,542.10/1,338.90
6. Step 6: Final answer
   x = 1,161.06