Finding the Fourth Proportional to 2,378.69, 3,566.72 and 734.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,378.69 : 3,566.72 = 734.78 : x
2. Step 2: Convert to fraction form
   2,378.69/3,566.72 = 734.78/x
3. Step 3: Cross multiply
   2,378.69x = 3,566.72 × 734.78
4. Step 4: Simplify right side
   2,378.69x = 2,620,734.85
5. Step 5: Solve for x
   x = 2,620,734.85/2,378.69
6. Step 6: Final answer
   x = 1,101.76