Finding the Fourth Proportional to 1,507.98, 2,262.38 and 859.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.98 : 2,262.38 = 859.18 : x
2. Step 2: Convert to fraction form
   1,507.98/2,262.38 = 859.18/x
3. Step 3: Cross multiply
   1,507.98x = 2,262.38 × 859.18
4. Step 4: Simplify right side
   1,507.98x = 1,943,791.65
5. Step 5: Solve for x
   x = 1,943,791.65/1,507.98
6. Step 6: Final answer
   x = 1,289.00