Finding the Fourth Proportional to 1,394.08, 1,923.84 and 773.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.08 : 1,923.84 = 773.12 : x
2. Step 2: Convert to fraction form
   1,394.08/1,923.84 = 773.12/x
3. Step 3: Cross multiply
   1,394.08x = 1,923.84 × 773.12
4. Step 4: Simplify right side
   1,394.08x = 1,487,359.18
5. Step 5: Solve for x
   x = 1,487,359.18/1,394.08
6. Step 6: Final answer
   x = 1,066.91