Finding the Fourth Proportional to 1,340.16, 1,849.92 and 926.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.16 : 1,849.92 = 926.72 : x
2. Step 2: Convert to fraction form
   1,340.16/1,849.92 = 926.72/x
3. Step 3: Cross multiply
   1,340.16x = 1,849.92 × 926.72
4. Step 4: Simplify right side
   1,340.16x = 1,714,357.86
5. Step 5: Solve for x
   x = 1,714,357.86/1,340.16
6. Step 6: Final answer
   x = 1,279.22