Finding the Fourth Proportional to 2,021.95, 2,789.94 and 1,137.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.95 : 2,789.94 = 1,137.79 : x
2. Step 2: Convert to fraction form
   2,021.95/2,789.94 = 1,137.79/x
3. Step 3: Cross multiply
   2,021.95x = 2,789.94 × 1,137.79
4. Step 4: Simplify right side
   2,021.95x = 3,174,365.83
5. Step 5: Solve for x
   x = 3,174,365.83/2,021.95
6. Step 6: Final answer
   x = 1,569.95