Finding the Fourth Proportional to 2,160.30, 3,241.86 and 927.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.30 : 3,241.86 = 927.96 : x
2. Step 2: Convert to fraction form
   2,160.30/3,241.86 = 927.96/x
3. Step 3: Cross multiply
   2,160.30x = 3,241.86 × 927.96
4. Step 4: Simplify right side
   2,160.30x = 3,008,316.41
5. Step 5: Solve for x
   x = 3,008,316.41/2,160.30
6. Step 6: Final answer
   x = 1,392.55