Finding the Fourth Proportional to 1,363.23, 1,880.46 and 890.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.23 : 1,880.46 = 890.51 : x
2. Step 2: Convert to fraction form
   1,363.23/1,880.46 = 890.51/x
3. Step 3: Cross multiply
   1,363.23x = 1,880.46 × 890.51
4. Step 4: Simplify right side
   1,363.23x = 1,674,559.03
5. Step 5: Solve for x
   x = 1,674,559.03/1,363.23
6. Step 6: Final answer
   x = 1,228.38