Finding the Fourth Proportional to 2,083.42, 3,123.58 and 1,261.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.42 : 3,123.58 = 1,261.50 : x
2. Step 2: Convert to fraction form
   2,083.42/3,123.58 = 1,261.50/x
3. Step 3: Cross multiply
   2,083.42x = 3,123.58 × 1,261.50
4. Step 4: Simplify right side
   2,083.42x = 3,940,393.02
5. Step 5: Solve for x
   x = 3,940,393.02/2,083.42
6. Step 6: Final answer
   x = 1,891.31