Finding the Fourth Proportional to 2,007.76, 2,770.76 and 1,123.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.76 : 2,770.76 = 1,123.60 : x
2. Step 2: Convert to fraction form
   2,007.76/2,770.76 = 1,123.60/x
3. Step 3: Cross multiply
   2,007.76x = 2,770.76 × 1,123.60
4. Step 4: Simplify right side
   2,007.76x = 3,113,225.94
5. Step 5: Solve for x
   x = 3,113,225.94/2,007.76
6. Step 6: Final answer
   x = 1,550.60