Finding the Fourth Proportional to 1,362.83, 1,880.01 and 920.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.83 : 1,880.01 = 920.57 : x
2. Step 2: Convert to fraction form
   1,362.83/1,880.01 = 920.57/x
3. Step 3: Cross multiply
   1,362.83x = 1,880.01 × 920.57
4. Step 4: Simplify right side
   1,362.83x = 1,730,671.41
5. Step 5: Solve for x
   x = 1,730,671.41/1,362.83
6. Step 6: Final answer
   x = 1,269.91