Finding the Fourth Proportional to 2,042.57, 2,818.74 and 1,111.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.57 : 2,818.74 = 1,111.07 : x
2. Step 2: Convert to fraction form
   2,042.57/2,818.74 = 1,111.07/x
3. Step 3: Cross multiply
   2,042.57x = 2,818.74 × 1,111.07
4. Step 4: Simplify right side
   2,042.57x = 3,131,817.45
5. Step 5: Solve for x
   x = 3,131,817.45/2,042.57
6. Step 6: Final answer
   x = 1,533.27