Finding the Fourth Proportional to 2,081.49, 2,872.47 and 1,137.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.49 : 2,872.47 = 1,137.30 : x
2. Step 2: Convert to fraction form
   2,081.49/2,872.47 = 1,137.30/x
3. Step 3: Cross multiply
   2,081.49x = 2,872.47 × 1,137.30
4. Step 4: Simplify right side
   2,081.49x = 3,266,867.31
5. Step 5: Solve for x
   x = 3,266,867.31/2,081.49
6. Step 6: Final answer
   x = 1,569.48