Finding the Fourth Proportional to 2,083.95, 3,123.89 and 1,042.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.95 : 3,123.89 = 1,042.40 : x
2. Step 2: Convert to fraction form
   2,083.95/3,123.89 = 1,042.40/x
3. Step 3: Cross multiply
   2,083.95x = 3,123.89 × 1,042.40
4. Step 4: Simplify right side
   2,083.95x = 3,256,322.10
5. Step 5: Solve for x
   x = 3,256,322.10/2,083.95
6. Step 6: Final answer
   x = 1,562.57