Finding the Fourth Proportional to 2,141.67, 3,211.29 and 1,276.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,141.67 : 3,211.29 = 1,276.59 : x
2. Step 2: Convert to fraction form
   2,141.67/3,211.29 = 1,276.59/x
3. Step 3: Cross multiply
   2,141.67x = 3,211.29 × 1,276.59
4. Step 4: Simplify right side
   2,141.67x = 4,099,500.70
5. Step 5: Solve for x
   x = 4,099,500.70/2,141.67
6. Step 6: Final answer
   x = 1,914.16