Finding the Fourth Proportional to 2,002.57, 2,763.31 and 1,118.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.57 : 2,763.31 = 1,118.34 : x
2. Step 2: Convert to fraction form
   2,002.57/2,763.31 = 1,118.34/x
3. Step 3: Cross multiply
   2,002.57x = 2,763.31 × 1,118.34
4. Step 4: Simplify right side
   2,002.57x = 3,090,320.11
5. Step 5: Solve for x
   x = 3,090,320.11/2,002.57
6. Step 6: Final answer
   x = 1,543.18