Finding the Fourth Proportional to 1,858.29, 2,564.34 and 1,018.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.29 : 2,564.34 = 1,018.83 : x
2. Step 2: Convert to fraction form
   1,858.29/2,564.34 = 1,018.83/x
3. Step 3: Cross multiply
   1,858.29x = 2,564.34 × 1,018.83
4. Step 4: Simplify right side
   1,858.29x = 2,612,626.52
5. Step 5: Solve for x
   x = 2,612,626.52/1,858.29
6. Step 6: Final answer
   x = 1,405.93