Finding the Fourth Proportional to 2,166.18, 2,986.91 and 1,883.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.18 : 2,986.91 = 1,883.89 : x
2. Step 2: Convert to fraction form
   2,166.18/2,986.91 = 1,883.89/x
3. Step 3: Cross multiply
   2,166.18x = 2,986.91 × 1,883.89
4. Step 4: Simplify right side
   2,166.18x = 5,627,011.26
5. Step 5: Solve for x
   x = 5,627,011.26/2,166.18
6. Step 6: Final answer
   x = 2,597.67