Finding the Fourth Proportional to 1,512.30, 2,086.83 and 922.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.30 : 2,086.83 = 922.71 : x
2. Step 2: Convert to fraction form
   1,512.30/2,086.83 = 922.71/x
3. Step 3: Cross multiply
   1,512.30x = 2,086.83 × 922.71
4. Step 4: Simplify right side
   1,512.30x = 1,925,538.91
5. Step 5: Solve for x
   x = 1,925,538.91/1,512.30
6. Step 6: Final answer
   x = 1,273.25