Finding the Fourth Proportional to 2,081.62, 2,872.64 and 1,137.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.62 : 2,872.64 = 1,137.43 : x
2. Step 2: Convert to fraction form
   2,081.62/2,872.64 = 1,137.43/x
3. Step 3: Cross multiply
   2,081.62x = 2,872.64 × 1,137.43
4. Step 4: Simplify right side
   2,081.62x = 3,267,422.58
5. Step 5: Solve for x
   x = 3,267,422.58/2,081.62
6. Step 6: Final answer
   x = 1,569.66