Finding the Fourth Proportional to 1,298.82, 1,949.40 and 881.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.82 : 1,949.40 = 881.34 : x
2. Step 2: Convert to fraction form
   1,298.82/1,949.40 = 881.34/x
3. Step 3: Cross multiply
   1,298.82x = 1,949.40 × 881.34
4. Step 4: Simplify right side
   1,298.82x = 1,718,084.20
5. Step 5: Solve for x
   x = 1,718,084.20/1,298.82
6. Step 6: Final answer
   x = 1,322.80