Finding the Fourth Proportional to 3,840.72, 5,300.76 and 2,162.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840.72 : 5,300.76 = 2,162.82 : x
2. Step 2: Convert to fraction form
   3,840.72/5,300.76 = 2,162.82/x
3. Step 3: Cross multiply
   3,840.72x = 5,300.76 × 2,162.82
4. Step 4: Simplify right side
   3,840.72x = 11,464,589.74
5. Step 5: Solve for x
   x = 11,464,589.74/3,840.72
6. Step 6: Final answer
   x = 2,985.01