Finding the Fourth Proportional to 2,007.90, 2,770.95 and 1,123.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.90 : 2,770.95 = 1,123.69 : x
2. Step 2: Convert to fraction form
   2,007.90/2,770.95 = 1,123.69/x
3. Step 3: Cross multiply
   2,007.90x = 2,770.95 × 1,123.69
4. Step 4: Simplify right side
   2,007.90x = 3,113,688.81
5. Step 5: Solve for x
   x = 3,113,688.81/2,007.90
6. Step 6: Final answer
   x = 1,550.72