Finding the Fourth Proportional to 1,362.82, 1,880.56 and 921.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.82 : 1,880.56 = 921.32 : x
2. Step 2: Convert to fraction form
   1,362.82/1,880.56 = 921.32/x
3. Step 3: Cross multiply
   1,362.82x = 1,880.56 × 921.32
4. Step 4: Simplify right side
   1,362.82x = 1,732,597.54
5. Step 5: Solve for x
   x = 1,732,597.54/1,362.82
6. Step 6: Final answer
   x = 1,271.33