Finding the Fourth Proportional to 1,094.89, 1,640.51 and 769.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094.89 : 1,640.51 = 769.68 : x
2. Step 2: Convert to fraction form
   1,094.89/1,640.51 = 769.68/x
3. Step 3: Cross multiply
   1,094.89x = 1,640.51 × 769.68
4. Step 4: Simplify right side
   1,094.89x = 1,262,667.74
5. Step 5: Solve for x
   x = 1,262,667.74/1,094.89
6. Step 6: Final answer
   x = 1,153.24