Finding the Fourth Proportional to 1,365.11, 1,884.71 and 841.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.11 : 1,884.71 = 841.31 : x
2. Step 2: Convert to fraction form
   1,365.11/1,884.71 = 841.31/x
3. Step 3: Cross multiply
   1,365.11x = 1,884.71 × 841.31
4. Step 4: Simplify right side
   1,365.11x = 1,585,621.16
5. Step 5: Solve for x
   x = 1,585,621.16/1,365.11
6. Step 6: Final answer
   x = 1,161.53