Finding the Fourth Proportional to 2,166.38, 3,250.05 and 1,011.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,166.38 : 3,250.05 = 1,011.50 : x
2. Step 2: Convert to fraction form
   2,166.38/3,250.05 = 1,011.50/x
3. Step 3: Cross multiply
   2,166.38x = 3,250.05 × 1,011.50
4. Step 4: Simplify right side
   2,166.38x = 3,287,425.58
5. Step 5: Solve for x
   x = 3,287,425.58/2,166.38
6. Step 6: Final answer
   x = 1,517.47