Finding the Fourth Proportional to 1,394.47, 1,924.42 and 765.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.47 : 1,924.42 = 765.02 : x
2. Step 2: Convert to fraction form
   1,394.47/1,924.42 = 765.02/x
3. Step 3: Cross multiply
   1,394.47x = 1,924.42 × 765.02
4. Step 4: Simplify right side
   1,394.47x = 1,472,222.69
5. Step 5: Solve for x
   x = 1,472,222.69/1,394.47
6. Step 6: Final answer
   x = 1,055.76