Finding the Fourth Proportional to 2,083.96, 2,875.94 and 1,139.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.96 : 2,875.94 = 1,139.81 : x
2. Step 2: Convert to fraction form
   2,083.96/2,875.94 = 1,139.81/x
3. Step 3: Cross multiply
   2,083.96x = 2,875.94 × 1,139.81
4. Step 4: Simplify right side
   2,083.96x = 3,278,026.66
5. Step 5: Solve for x
   x = 3,278,026.66/2,083.96
6. Step 6: Final answer
   x = 1,572.98