Finding the Fourth Proportional to 2,059.76, 3,086.60 and 1,890.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,059.76 : 3,086.60 = 1,890.06 : x
2. Step 2: Convert to fraction form
   2,059.76/3,086.60 = 1,890.06/x
3. Step 3: Cross multiply
   2,059.76x = 3,086.60 × 1,890.06
4. Step 4: Simplify right side
   2,059.76x = 5,833,849.75
5. Step 5: Solve for x
   x = 5,833,849.75/2,059.76
6. Step 6: Final answer
   x = 2,832.30