Finding the Fourth Proportional to 1,182.39, 1,772.52 and 764.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.39 : 1,772.52 = 764.79 : x
2. Step 2: Convert to fraction form
   1,182.39/1,772.52 = 764.79/x
3. Step 3: Cross multiply
   1,182.39x = 1,772.52 × 764.79
4. Step 4: Simplify right side
   1,182.39x = 1,355,605.57
5. Step 5: Solve for x
   x = 1,355,605.57/1,182.39
6. Step 6: Final answer
   x = 1,146.50