Finding the Fourth Proportional to 1,329.43, 1,834.71 and 880.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,329.43 : 1,834.71 = 880.53 : x
2. Step 2: Convert to fraction form
   1,329.43/1,834.71 = 880.53/x
3. Step 3: Cross multiply
   1,329.43x = 1,834.71 × 880.53
4. Step 4: Simplify right side
   1,329.43x = 1,615,507.01
5. Step 5: Solve for x
   x = 1,615,507.01/1,329.43
6. Step 6: Final answer
   x = 1,215.19