Finding the Fourth Proportional to 2,085.82, 3,128.83 and 1,719.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.82 : 3,128.83 = 1,719.93 : x
2. Step 2: Convert to fraction form
   2,085.82/3,128.83 = 1,719.93/x
3. Step 3: Cross multiply
   2,085.82x = 3,128.83 × 1,719.93
4. Step 4: Simplify right side
   2,085.82x = 5,381,376.02
5. Step 5: Solve for x
   x = 5,381,376.02/2,085.82
6. Step 6: Final answer
   x = 2,579.98