Finding the Fourth Proportional to 2,707.33, 4,061.13 and 2,661.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,707.33 : 4,061.13 = 2,661.31 : x
2. Step 2: Convert to fraction form
   2,707.33/4,061.13 = 2,661.31/x
3. Step 3: Cross multiply
   2,707.33x = 4,061.13 × 2,661.31
4. Step 4: Simplify right side
   2,707.33x = 10,807,925.88
5. Step 5: Solve for x
   x = 10,807,925.88/2,707.33
6. Step 6: Final answer
   x = 3,992.10