Finding the Fourth Proportional to 1,394.98, 1,923.50 and 890.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.98 : 1,923.50 = 890.16 : x
2. Step 2: Convert to fraction form
   1,394.98/1,923.50 = 890.16/x
3. Step 3: Cross multiply
   1,394.98x = 1,923.50 × 890.16
4. Step 4: Simplify right side
   1,394.98x = 1,712,222.76
5. Step 5: Solve for x
   x = 1,712,222.76/1,394.98
6. Step 6: Final answer
   x = 1,227.42