Finding the Fourth Proportional to 2,011.43, 3,017.73 and 840.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,011.43 : 3,017.73 = 840.83 : x
2. Step 2: Convert to fraction form
   2,011.43/3,017.73 = 840.83/x
3. Step 3: Cross multiply
   2,011.43x = 3,017.73 × 840.83
4. Step 4: Simplify right side
   2,011.43x = 2,537,400.59
5. Step 5: Solve for x
   x = 2,537,400.59/2,011.43
6. Step 6: Final answer
   x = 1,261.49