Finding the Fourth Proportional to 2,619.72, 3,931.92 and 1,233.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,619.72 : 3,931.92 = 1,233.81 : x
2. Step 2: Convert to fraction form
   2,619.72/3,931.92 = 1,233.81/x
3. Step 3: Cross multiply
   2,619.72x = 3,931.92 × 1,233.81
4. Step 4: Simplify right side
   2,619.72x = 4,851,242.22
5. Step 5: Solve for x
   x = 4,851,242.22/2,619.72
6. Step 6: Final answer
   x = 1,851.82