Finding the Fourth Proportional to 1,672.38, 2,308.02 and 926.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.38 : 2,308.02 = 926.52 : x
2. Step 2: Convert to fraction form
   1,672.38/2,308.02 = 926.52/x
3. Step 3: Cross multiply
   1,672.38x = 2,308.02 × 926.52
4. Step 4: Simplify right side
   1,672.38x = 2,138,426.69
5. Step 5: Solve for x
   x = 2,138,426.69/1,672.38
6. Step 6: Final answer
   x = 1,278.67