Finding the Fourth Proportional to 2,820.52, 3,892.28 and 1,578.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.52 : 3,892.28 = 1,578.52 : x
2. Step 2: Convert to fraction form
   2,820.52/3,892.28 = 1,578.52/x
3. Step 3: Cross multiply
   2,820.52x = 3,892.28 × 1,578.52
4. Step 4: Simplify right side
   2,820.52x = 6,144,041.83
5. Step 5: Solve for x
   x = 6,144,041.83/2,820.52
6. Step 6: Final answer
   x = 2,178.34