Finding the Fourth Proportional to 2,091.78, 2,884.92 and 1,761

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.78 : 2,884.92 = 1,761 : x
2. Step 2: Convert to fraction form
   2,091.78/2,884.92 = 1,761/x
3. Step 3: Cross multiply
   2,091.78x = 2,884.92 × 1,761
4. Step 4: Simplify right side
   2,091.78x = 5,080,344.12
5. Step 5: Solve for x
   x = 5,080,344.12/2,091.78
6. Step 6: Final answer
   x = 2,428.72