Finding the Fourth Proportional to 1,285.58, 1,774.15 and 726.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.58 : 1,774.15 = 726.07 : x
2. Step 2: Convert to fraction form
   1,285.58/1,774.15 = 726.07/x
3. Step 3: Cross multiply
   1,285.58x = 1,774.15 × 726.07
4. Step 4: Simplify right side
   1,285.58x = 1,288,150.84
5. Step 5: Solve for x
   x = 1,288,150.84/1,285.58
6. Step 6: Final answer
   x = 1,002.00