Finding the Fourth Proportional to 1,423.98, 1,961.89 and 1,069.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,423.98 : 1,961.89 = 1,069.34 : x
2. Step 2: Convert to fraction form
   1,423.98/1,961.89 = 1,069.34/x
3. Step 3: Cross multiply
   1,423.98x = 1,961.89 × 1,069.34
4. Step 4: Simplify right side
   1,423.98x = 2,097,914.97
5. Step 5: Solve for x
   x = 2,097,914.97/1,423.98
6. Step 6: Final answer
   x = 1,473.28