Finding the Fourth Proportional to 2,113.89, 3,171.03 and 881.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.89 : 3,171.03 = 881.98 : x
2. Step 2: Convert to fraction form
   2,113.89/3,171.03 = 881.98/x
3. Step 3: Cross multiply
   2,113.89x = 3,171.03 × 881.98
4. Step 4: Simplify right side
   2,113.89x = 2,796,785.04
5. Step 5: Solve for x
   x = 2,796,785.04/2,113.89
6. Step 6: Final answer
   x = 1,323.05