Finding the Fourth Proportional to 1,404.23, 1,937.41 and 814.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.23 : 1,937.41 = 814.65 : x
2. Step 2: Convert to fraction form
   1,404.23/1,937.41 = 814.65/x
3. Step 3: Cross multiply
   1,404.23x = 1,937.41 × 814.65
4. Step 4: Simplify right side
   1,404.23x = 1,578,311.06
5. Step 5: Solve for x
   x = 1,578,311.06/1,404.23
6. Step 6: Final answer
   x = 1,123.97