Finding the Fourth Proportional to 1,273.05, 1,906.83 and 924.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,273.05 : 1,906.83 = 924.72 : x
2. Step 2: Convert to fraction form
   1,273.05/1,906.83 = 924.72/x
3. Step 3: Cross multiply
   1,273.05x = 1,906.83 × 924.72
4. Step 4: Simplify right side
   1,273.05x = 1,763,283.84
5. Step 5: Solve for x
   x = 1,763,283.84/1,273.05
6. Step 6: Final answer
   x = 1,385.09