Finding the Fourth Proportional to 1,273.29, 1,908.72 and 623.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.29 : 1,908.72 = 623.31 : x
2. Step 2: Convert to fraction form
   1,273.29/1,908.72 = 623.31/x
3. Step 3: Cross multiply
   1,273.29x = 1,908.72 × 623.31
4. Step 4: Simplify right side
   1,273.29x = 1,189,724.26
5. Step 5: Solve for x
   x = 1,189,724.26/1,273.29
6. Step 6: Final answer
   x = 934.37