Finding the Fourth Proportional to 1,329.91, 1,834.43 and 881.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.91 : 1,834.43 = 881.78 : x
2. Step 2: Convert to fraction form
   1,329.91/1,834.43 = 881.78/x
3. Step 3: Cross multiply
   1,329.91x = 1,834.43 × 881.78
4. Step 4: Simplify right side
   1,329.91x = 1,617,550.10
5. Step 5: Solve for x
   x = 1,617,550.10/1,329.91
6. Step 6: Final answer
   x = 1,216.29