Finding the Fourth Proportional to 2,511.49, 3,766.32 and 1,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.49 : 3,766.32 = 1,123.45 : x
2. Step 2: Convert to fraction form
   2,511.49/3,766.32 = 1,123.45/x
3. Step 3: Cross multiply
   2,511.49x = 3,766.32 × 1,123.45
4. Step 4: Simplify right side
   2,511.49x = 4,231,272.20
5. Step 5: Solve for x
   x = 4,231,272.20/2,511.49
6. Step 6: Final answer
   x = 1,684.77