Finding the Fourth Proportional to 2,007.90, 2,770.83 and 1,123.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.90 : 2,770.83 = 1,123.74 : x
2. Step 2: Convert to fraction form
   2,007.90/2,770.83 = 1,123.74/x
3. Step 3: Cross multiply
   2,007.90x = 2,770.83 × 1,123.74
4. Step 4: Simplify right side
   2,007.90x = 3,113,692.50
5. Step 5: Solve for x
   x = 3,113,692.50/2,007.90
6. Step 6: Final answer
   x = 1,550.72