Finding the Fourth Proportional to 2,091.80, 2,884.90 and 1,761

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.80 : 2,884.90 = 1,761 : x
2. Step 2: Convert to fraction form
   2,091.80/2,884.90 = 1,761/x
3. Step 3: Cross multiply
   2,091.80x = 2,884.90 × 1,761
4. Step 4: Simplify right side
   2,091.80x = 5,080,308.90
5. Step 5: Solve for x
   x = 5,080,308.90/2,091.80
6. Step 6: Final answer
   x = 2,428.68