Finding the Fourth Proportional to 1,919.55, 2,649.42 and 1,123.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919.55 : 2,649.42 = 1,123.24 : x
2. Step 2: Convert to fraction form
   1,919.55/2,649.42 = 1,123.24/x
3. Step 3: Cross multiply
   1,919.55x = 2,649.42 × 1,123.24
4. Step 4: Simplify right side
   1,919.55x = 2,975,934.52
5. Step 5: Solve for x
   x = 2,975,934.52/1,919.55
6. Step 6: Final answer
   x = 1,550.33