Finding the Fourth Proportional to 3,764.72, 5,643.84 and 1,818.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,764.72 : 5,643.84 = 1,818.28 : x
2. Step 2: Convert to fraction form
   3,764.72/5,643.84 = 1,818.28/x
3. Step 3: Cross multiply
   3,764.72x = 5,643.84 × 1,818.28
4. Step 4: Simplify right side
   3,764.72x = 10,262,081.40
5. Step 5: Solve for x
   x = 10,262,081.40/3,764.72
6. Step 6: Final answer
   x = 2,725.86