Finding the Fourth Proportional to 1,448.47, 1,998.27 and 858.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.47 : 1,998.27 = 858.69 : x
2. Step 2: Convert to fraction form
   1,448.47/1,998.27 = 858.69/x
3. Step 3: Cross multiply
   1,448.47x = 1,998.27 × 858.69
4. Step 4: Simplify right side
   1,448.47x = 1,715,894.47
5. Step 5: Solve for x
   x = 1,715,894.47/1,448.47
6. Step 6: Final answer
   x = 1,184.63