Finding the Fourth Proportional to 2,763.79, 4,145.69 and 1,378.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,763.79 : 4,145.69 = 1,378.82 : x
2. Step 2: Convert to fraction form
   2,763.79/4,145.69 = 1,378.82/x
3. Step 3: Cross multiply
   2,763.79x = 4,145.69 × 1,378.82
4. Step 4: Simplify right side
   2,763.79x = 5,716,153.39
5. Step 5: Solve for x
   x = 5,716,153.39/2,763.79
6. Step 6: Final answer
   x = 2,068.23