Finding the Fourth Proportional to 1,938.91, 2,675.70 and 1,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,938.91 : 2,675.70 = 1,054.72 : x
2. Step 2: Convert to fraction form
   1,938.91/2,675.70 = 1,054.72/x
3. Step 3: Cross multiply
   1,938.91x = 2,675.70 × 1,054.72
4. Step 4: Simplify right side
   1,938.91x = 2,822,114.30
5. Step 5: Solve for x
   x = 2,822,114.30/1,938.91
6. Step 6: Final answer
   x = 1,455.52