Finding the Fourth Proportional to 2,160.59, 2,982.11 and 1,276.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.59 : 2,982.11 = 1,276.69 : x
2. Step 2: Convert to fraction form
   2,160.59/2,982.11 = 1,276.69/x
3. Step 3: Cross multiply
   2,160.59x = 2,982.11 × 1,276.69
4. Step 4: Simplify right side
   2,160.59x = 3,807,223.63
5. Step 5: Solve for x
   x = 3,807,223.63/2,160.59
6. Step 6: Final answer
   x = 1,762.12