Finding the Fourth Proportional to 1,423.61, 1,964.43 and 1,050.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.61 : 1,964.43 = 1,050.79 : x
2. Step 2: Convert to fraction form
   1,423.61/1,964.43 = 1,050.79/x
3. Step 3: Cross multiply
   1,423.61x = 1,964.43 × 1,050.79
4. Step 4: Simplify right side
   1,423.61x = 2,064,203.40
5. Step 5: Solve for x
   x = 2,064,203.40/1,423.61
6. Step 6: Final answer
   x = 1,449.98