Finding the Fourth Proportional to 2,150.55, 2,966.55 and 1,311.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.55 : 2,966.55 = 1,311.45 : x
2. Step 2: Convert to fraction form
   2,150.55/2,966.55 = 1,311.45/x
3. Step 3: Cross multiply
   2,150.55x = 2,966.55 × 1,311.45
4. Step 4: Simplify right side
   2,150.55x = 3,890,482.00
5. Step 5: Solve for x
   x = 3,890,482.00/2,150.55
6. Step 6: Final answer
   x = 1,809.06