Finding the Fourth Proportional to 2,077.87, 2,866.17 and 1,238.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.87 : 2,866.17 = 1,238.00 : x
2. Step 2: Convert to fraction form
   2,077.87/2,866.17 = 1,238.00/x
3. Step 3: Cross multiply
   2,077.87x = 2,866.17 × 1,238.00
4. Step 4: Simplify right side
   2,077.87x = 3,548,330.27
5. Step 5: Solve for x
   x = 3,548,330.27/2,077.87
6. Step 6: Final answer
   x = 1,707.68