Finding the Fourth Proportional to 1,431.42, 2,142.45 and 884.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.42 : 2,142.45 = 884.04 : x
2. Step 2: Convert to fraction form
   1,431.42/2,142.45 = 884.04/x
3. Step 3: Cross multiply
   1,431.42x = 2,142.45 × 884.04
4. Step 4: Simplify right side
   1,431.42x = 1,894,011.50
5. Step 5: Solve for x
   x = 1,894,011.50/1,431.42
6. Step 6: Final answer
   x = 1,323.17