Finding the Fourth Proportional to 1,339.92, 2,009.61 and 932.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.92 : 2,009.61 = 932.76 : x
2. Step 2: Convert to fraction form
   1,339.92/2,009.61 = 932.76/x
3. Step 3: Cross multiply
   1,339.92x = 2,009.61 × 932.76
4. Step 4: Simplify right side
   1,339.92x = 1,874,483.82
5. Step 5: Solve for x
   x = 1,874,483.82/1,339.92
6. Step 6: Final answer
   x = 1,398.95