Finding the Fourth Proportional to 1,938.62, 2,675.21 and 1,054.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.62 : 2,675.21 = 1,054.42 : x
2. Step 2: Convert to fraction form
   1,938.62/2,675.21 = 1,054.42/x
3. Step 3: Cross multiply
   1,938.62x = 2,675.21 × 1,054.42
4. Step 4: Simplify right side
   1,938.62x = 2,820,795.89
5. Step 5: Solve for x
   x = 2,820,795.89/1,938.62
6. Step 6: Final answer
   x = 1,455.06