Finding the Fourth Proportional to 2,733.42, 4,092.72 and 2,145.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,733.42 : 4,092.72 = 2,145.30 : x
2. Step 2: Convert to fraction form
   2,733.42/4,092.72 = 2,145.30/x
3. Step 3: Cross multiply
   2,733.42x = 4,092.72 × 2,145.30
4. Step 4: Simplify right side
   2,733.42x = 8,780,112.22
5. Step 5: Solve for x
   x = 8,780,112.22/2,733.42
6. Step 6: Final answer
   x = 3,212.13