Finding the Fourth Proportional to 1,583.96, 2,185.83 and 875.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,583.96 : 2,185.83 = 875.79 : x
2. Step 2: Convert to fraction form
   1,583.96/2,185.83 = 875.79/x
3. Step 3: Cross multiply
   1,583.96x = 2,185.83 × 875.79
4. Step 4: Simplify right side
   1,583.96x = 1,914,321.29
5. Step 5: Solve for x
   x = 1,914,321.29/1,583.96
6. Step 6: Final answer
   x = 1,208.56