Finding the Fourth Proportional to 1,429.20, 2,145.15 and 882.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.20 : 2,145.15 = 882.45 : x
2. Step 2: Convert to fraction form
   1,429.20/2,145.15 = 882.45/x
3. Step 3: Cross multiply
   1,429.20x = 2,145.15 × 882.45
4. Step 4: Simplify right side
   1,429.20x = 1,892,987.62
5. Step 5: Solve for x
   x = 1,892,987.62/1,429.20
6. Step 6: Final answer
   x = 1,324.51