Finding the Fourth Proportional to 2,632.79, 3,949.15 and 783.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,632.79 : 3,949.15 = 783.92 : x
2. Step 2: Convert to fraction form
   2,632.79/3,949.15 = 783.92/x
3. Step 3: Cross multiply
   2,632.79x = 3,949.15 × 783.92
4. Step 4: Simplify right side
   2,632.79x = 3,095,795.96
5. Step 5: Solve for x
   x = 3,095,795.96/2,632.79
6. Step 6: Final answer
   x = 1,175.86