Finding the Fourth Proportional to 1,431.32, 2,148.30 and 884.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.32 : 2,148.30 = 884.56 : x
2. Step 2: Convert to fraction form
   1,431.32/2,148.30 = 884.56/x
3. Step 3: Cross multiply
   1,431.32x = 2,148.30 × 884.56
4. Step 4: Simplify right side
   1,431.32x = 1,900,300.25
5. Step 5: Solve for x
   x = 1,900,300.25/1,431.32
6. Step 6: Final answer
   x = 1,327.66