Finding the Fourth Proportional to 2,083.20, 3,123.72 and 1,042.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.20 : 3,123.72 = 1,042.08 : x
2. Step 2: Convert to fraction form
   2,083.20/3,123.72 = 1,042.08/x
3. Step 3: Cross multiply
   2,083.20x = 3,123.72 × 1,042.08
4. Step 4: Simplify right side
   2,083.20x = 3,255,166.14
5. Step 5: Solve for x
   x = 3,255,166.14/2,083.20
6. Step 6: Final answer
   x = 1,562.58