Finding the Fourth Proportional to 1,339.92, 2,017.29 and 1,048.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.92 : 2,017.29 = 1,048.98 : x
2. Step 2: Convert to fraction form
   1,339.92/2,017.29 = 1,048.98/x
3. Step 3: Cross multiply
   1,339.92x = 2,017.29 × 1,048.98
4. Step 4: Simplify right side
   1,339.92x = 2,116,096.86
5. Step 5: Solve for x
   x = 2,116,096.86/1,339.92
6. Step 6: Final answer
   x = 1,579.27