Finding the Fourth Proportional to 1,448.34, 1,998.89 and 859.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,448.34 : 1,998.89 = 859.10 : x
2. Step 2: Convert to fraction form
   1,448.34/1,998.89 = 859.10/x
3. Step 3: Cross multiply
   1,448.34x = 1,998.89 × 859.10
4. Step 4: Simplify right side
   1,448.34x = 1,717,246.40
5. Step 5: Solve for x
   x = 1,717,246.40/1,448.34
6. Step 6: Final answer
   x = 1,185.67