Finding the Fourth Proportional to 1,929.05, 2,892.72 and 888.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,929.05 : 2,892.72 = 888.80 : x
2. Step 2: Convert to fraction form
   1,929.05/2,892.72 = 888.80/x
3. Step 3: Cross multiply
   1,929.05x = 2,892.72 × 888.80
4. Step 4: Simplify right side
   1,929.05x = 2,571,049.54
5. Step 5: Solve for x
   x = 2,571,049.54/1,929.05
6. Step 6: Final answer
   x = 1,332.81