Finding the Fourth Proportional to 1,048.91, 1,573.37 and 686.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.91 : 1,573.37 = 686.00 : x
2. Step 2: Convert to fraction form
   1,048.91/1,573.37 = 686.00/x
3. Step 3: Cross multiply
   1,048.91x = 1,573.37 × 686.00
4. Step 4: Simplify right side
   1,048.91x = 1,079,320.52
5. Step 5: Solve for x
   x = 1,079,320.52/1,048.91
6. Step 6: Final answer
   x = 1,029.00