Finding the Fourth Proportional to 2,615.31, 3,923.58 and 883.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.31 : 3,923.58 = 883.94 : x
2. Step 2: Convert to fraction form
   2,615.31/3,923.58 = 883.94/x
3. Step 3: Cross multiply
   2,615.31x = 3,923.58 × 883.94
4. Step 4: Simplify right side
   2,615.31x = 3,468,197.29
5. Step 5: Solve for x
   x = 3,468,197.29/2,615.31
6. Step 6: Final answer
   x = 1,326.11