Finding the Fourth Proportional to 1,642.89, 2,463.43 and 1,123.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.89 : 2,463.43 = 1,123.48 : x
2. Step 2: Convert to fraction form
   1,642.89/2,463.43 = 1,123.48/x
3. Step 3: Cross multiply
   1,642.89x = 2,463.43 × 1,123.48
4. Step 4: Simplify right side
   1,642.89x = 2,767,614.34
5. Step 5: Solve for x
   x = 2,767,614.34/1,642.89
6. Step 6: Final answer
   x = 1,684.60