Finding the Fourth Proportional to 1,394.90, 1,922.72 and 946.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.90 : 1,922.72 = 946.63 : x
2. Step 2: Convert to fraction form
   1,394.90/1,922.72 = 946.63/x
3. Step 3: Cross multiply
   1,394.90x = 1,922.72 × 946.63
4. Step 4: Simplify right side
   1,394.90x = 1,820,102.10
5. Step 5: Solve for x
   x = 1,820,102.10/1,394.90
6. Step 6: Final answer
   x = 1,304.83