Finding the Fourth Proportional to 1,869.46, 2,579.73 and 1,123.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.46 : 2,579.73 = 1,123.49 : x
2. Step 2: Convert to fraction form
   1,869.46/2,579.73 = 1,123.49/x
3. Step 3: Cross multiply
   1,869.46x = 2,579.73 × 1,123.49
4. Step 4: Simplify right side
   1,869.46x = 2,898,300.86
5. Step 5: Solve for x
   x = 2,898,300.86/1,869.46
6. Step 6: Final answer
   x = 1,550.34