Finding the Fourth Proportional to 1,362.60, 1,880.33 and 920.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.60 : 1,880.33 = 920.43 : x
2. Step 2: Convert to fraction form
   1,362.60/1,880.33 = 920.43/x
3. Step 3: Cross multiply
   1,362.60x = 1,880.33 × 920.43
4. Step 4: Simplify right side
   1,362.60x = 1,730,707.54
5. Step 5: Solve for x
   x = 1,730,707.54/1,362.60
6. Step 6: Final answer
   x = 1,270.15