Finding the Fourth Proportional to 2,045.31, 2,822.59 and 1,161.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.31 : 2,822.59 = 1,161.15 : x
2. Step 2: Convert to fraction form
   2,045.31/2,822.59 = 1,161.15/x
3. Step 3: Cross multiply
   2,045.31x = 2,822.59 × 1,161.15
4. Step 4: Simplify right side
   2,045.31x = 3,277,436.27
5. Step 5: Solve for x
   x = 3,277,436.27/2,045.31
6. Step 6: Final answer
   x = 1,602.42