Finding the Fourth Proportional to 2,043.78, 2,820.36 and 1,112.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.78 : 2,820.36 = 1,112.28 : x
2. Step 2: Convert to fraction form
   2,043.78/2,820.36 = 1,112.28/x
3. Step 3: Cross multiply
   2,043.78x = 2,820.36 × 1,112.28
4. Step 4: Simplify right side
   2,043.78x = 3,137,030.02
5. Step 5: Solve for x
   x = 3,137,030.02/2,043.78
6. Step 6: Final answer
   x = 1,534.92