Finding the Fourth Proportional to 1,297.72, 1,789.59 and 1,048.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297.72 : 1,789.59 = 1,048.87 : x
2. Step 2: Convert to fraction form
   1,297.72/1,789.59 = 1,048.87/x
3. Step 3: Cross multiply
   1,297.72x = 1,789.59 × 1,048.87
4. Step 4: Simplify right side
   1,297.72x = 1,877,047.26
5. Step 5: Solve for x
   x = 1,877,047.26/1,297.72
6. Step 6: Final answer
   x = 1,446.42