Finding the Fourth Proportional to 2,127.06, 2,933.91 and 1,287.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,127.06 : 2,933.91 = 1,287.18 : x
2. Step 2: Convert to fraction form
   2,127.06/2,933.91 = 1,287.18/x
3. Step 3: Cross multiply
   2,127.06x = 2,933.91 × 1,287.18
4. Step 4: Simplify right side
   2,127.06x = 3,776,470.27
5. Step 5: Solve for x
   x = 3,776,470.27/2,127.06
6. Step 6: Final answer
   x = 1,775.44