Finding the Fourth Proportional to 1,868.96, 2,798.01 and 1,086.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,868.96 : 2,798.01 = 1,086.58 : x
2. Step 2: Convert to fraction form
   1,868.96/2,798.01 = 1,086.58/x
3. Step 3: Cross multiply
   1,868.96x = 2,798.01 × 1,086.58
4. Step 4: Simplify right side
   1,868.96x = 3,040,247.72
5. Step 5: Solve for x
   x = 3,040,247.72/1,868.96
6. Step 6: Final answer
   x = 1,626.71