Finding the Fourth Proportional to 2,872.50, 4,300.34 and 2,181.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,872.50 : 4,300.34 = 2,181.87 : x
2. Step 2: Convert to fraction form
   2,872.50/4,300.34 = 2,181.87/x
3. Step 3: Cross multiply
   2,872.50x = 4,300.34 × 2,181.87
4. Step 4: Simplify right side
   2,872.50x = 9,382,784.20
5. Step 5: Solve for x
   x = 9,382,784.20/2,872.50
6. Step 6: Final answer
   x = 3,266.42