Finding the Fourth Proportional to 1,046.37, 1,570.57 and 769.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.37 : 1,570.57 = 769.58 : x
2. Step 2: Convert to fraction form
   1,046.37/1,570.57 = 769.58/x
3. Step 3: Cross multiply
   1,046.37x = 1,570.57 × 769.58
4. Step 4: Simplify right side
   1,046.37x = 1,208,669.48
5. Step 5: Solve for x
   x = 1,208,669.48/1,046.37
6. Step 6: Final answer
   x = 1,155.11