Finding the Fourth Proportional to 2,751.30, 3,792.42 and 2,160.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,751.30 : 3,792.42 = 2,160.81 : x
2. Step 2: Convert to fraction form
   2,751.30/3,792.42 = 2,160.81/x
3. Step 3: Cross multiply
   2,751.30x = 3,792.42 × 2,160.81
4. Step 4: Simplify right side
   2,751.30x = 8,194,699.06
5. Step 5: Solve for x
   x = 8,194,699.06/2,751.30
6. Step 6: Final answer
   x = 2,978.48