Finding the Fourth Proportional to 1,429.32, 2,142.60 and 909.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.32 : 2,142.60 = 909.96 : x
2. Step 2: Convert to fraction form
   1,429.32/2,142.60 = 909.96/x
3. Step 3: Cross multiply
   1,429.32x = 2,142.60 × 909.96
4. Step 4: Simplify right side
   1,429.32x = 1,949,680.30
5. Step 5: Solve for x
   x = 1,949,680.30/1,429.32
6. Step 6: Final answer
   x = 1,364.06