Finding the Fourth Proportional to 1,432.44, 1,976.22 and 842.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.44 : 1,976.22 = 842.76 : x
2. Step 2: Convert to fraction form
   1,432.44/1,976.22 = 842.76/x
3. Step 3: Cross multiply
   1,432.44x = 1,976.22 × 842.76
4. Step 4: Simplify right side
   1,432.44x = 1,665,479.17
5. Step 5: Solve for x
   x = 1,665,479.17/1,432.44
6. Step 6: Final answer
   x = 1,162.69