Finding the Fourth Proportional to 2,087.10, 2,876.88 and 1,644.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.10 : 2,876.88 = 1,644.24 : x
2. Step 2: Convert to fraction form
   2,087.10/2,876.88 = 1,644.24/x
3. Step 3: Cross multiply
   2,087.10x = 2,876.88 × 1,644.24
4. Step 4: Simplify right side
   2,087.10x = 4,730,281.17
5. Step 5: Solve for x
   x = 4,730,281.17/2,087.10
6. Step 6: Final answer
   x = 2,266.44