Finding the Fourth Proportional to 2,084.60, 3,112.84 and 1,811.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.60 : 3,112.84 = 1,811.36 : x
2. Step 2: Convert to fraction form
   2,084.60/3,112.84 = 1,811.36/x
3. Step 3: Cross multiply
   2,084.60x = 3,112.84 × 1,811.36
4. Step 4: Simplify right side
   2,084.60x = 5,638,473.86
5. Step 5: Solve for x
   x = 5,638,473.86/2,084.60
6. Step 6: Final answer
   x = 2,704.82