Finding the Fourth Proportional to 2,042.55, 2,820.30 and 1,569.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.55 : 2,820.30 = 1,569.69 : x
2. Step 2: Convert to fraction form
   2,042.55/2,820.30 = 1,569.69/x
3. Step 3: Cross multiply
   2,042.55x = 2,820.30 × 1,569.69
4. Step 4: Simplify right side
   2,042.55x = 4,426,996.71
5. Step 5: Solve for x
   x = 4,426,996.71/2,042.55
6. Step 6: Final answer
   x = 2,167.39