Finding the Fourth Proportional to 1,888.72, 2,606.42 and 1,049.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,888.72 : 2,606.42 = 1,049.40 : x
2. Step 2: Convert to fraction form
   1,888.72/2,606.42 = 1,049.40/x
3. Step 3: Cross multiply
   1,888.72x = 2,606.42 × 1,049.40
4. Step 4: Simplify right side
   1,888.72x = 2,735,171.90
5. Step 5: Solve for x
   x = 2,735,171.90/1,888.72
6. Step 6: Final answer
   x = 1,448.17