Finding the Fourth Proportional to 2,061.20, 3,086.66 and 1,442.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,061.20 : 3,086.66 = 1,442.00 : x
2. Step 2: Convert to fraction form
   2,061.20/3,086.66 = 1,442.00/x
3. Step 3: Cross multiply
   2,061.20x = 3,086.66 × 1,442.00
4. Step 4: Simplify right side
   2,061.20x = 4,450,972.99
5. Step 5: Solve for x
   x = 4,450,972.99/2,061.20
6. Step 6: Final answer
   x = 2,159.41