Finding the Fourth Proportional to 2,042.57, 2,820.10 and 1,569.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.57 : 2,820.10 = 1,569.62 : x
2. Step 2: Convert to fraction form
   2,042.57/2,820.10 = 1,569.62/x
3. Step 3: Cross multiply
   2,042.57x = 2,820.10 × 1,569.62
4. Step 4: Simplify right side
   2,042.57x = 4,426,485.36
5. Step 5: Solve for x
   x = 4,426,485.36/2,042.57
6. Step 6: Final answer
   x = 2,167.12