Finding the Fourth Proportional to 1,375.11, 1,897.89 and 1,042.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.11 : 1,897.89 = 1,042.98 : x
2. Step 2: Convert to fraction form
   1,375.11/1,897.89 = 1,042.98/x
3. Step 3: Cross multiply
   1,375.11x = 1,897.89 × 1,042.98
4. Step 4: Simplify right side
   1,375.11x = 1,979,461.31
5. Step 5: Solve for x
   x = 1,979,461.31/1,375.11
6. Step 6: Final answer
   x = 1,439.49