Finding the Fourth Proportional to 1,372.65, 1,895.88 and 1,040.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.65 : 1,895.88 = 1,040.34 : x
2. Step 2: Convert to fraction form
   1,372.65/1,895.88 = 1,040.34/x
3. Step 3: Cross multiply
   1,372.65x = 1,895.88 × 1,040.34
4. Step 4: Simplify right side
   1,372.65x = 1,972,359.80
5. Step 5: Solve for x
   x = 1,972,359.80/1,372.65
6. Step 6: Final answer
   x = 1,436.90