Finding the Fourth Proportional to 1,426.42, 1,964.52 and 1,229.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.42 : 1,964.52 = 1,229.86 : x
2. Step 2: Convert to fraction form
   1,426.42/1,964.52 = 1,229.86/x
3. Step 3: Cross multiply
   1,426.42x = 1,964.52 × 1,229.86
4. Step 4: Simplify right side
   1,426.42x = 2,416,084.57
5. Step 5: Solve for x
   x = 2,416,084.57/1,426.42
6. Step 6: Final answer
   x = 1,693.81