Finding the Fourth Proportional to 2,097.80, 2,896.91 and 1,353.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,097.80 : 2,896.91 = 1,353.05 : x
2. Step 2: Convert to fraction form
   2,097.80/2,896.91 = 1,353.05/x
3. Step 3: Cross multiply
   2,097.80x = 2,896.91 × 1,353.05
4. Step 4: Simplify right side
   2,097.80x = 3,919,642.83
5. Step 5: Solve for x
   x = 3,919,642.83/2,097.80
6. Step 6: Final answer
   x = 1,868.46