Finding the Fourth Proportional to 2,842.61, 4,255.81 and 2,152.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,842.61 : 4,255.81 = 2,152.08 : x
2. Step 2: Convert to fraction form
   2,842.61/4,255.81 = 2,152.08/x
3. Step 3: Cross multiply
   2,842.61x = 4,255.81 × 2,152.08
4. Step 4: Simplify right side
   2,842.61x = 9,158,838.20
5. Step 5: Solve for x
   x = 9,158,838.20/2,842.61
6. Step 6: Final answer
   x = 3,221.99