Finding the Fourth Proportional to 2,099.82, 2,897.75 and 1,215.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.82 : 2,897.75 = 1,215.69 : x
2. Step 2: Convert to fraction form
   2,099.82/2,897.75 = 1,215.69/x
3. Step 3: Cross multiply
   2,099.82x = 2,897.75 × 1,215.69
4. Step 4: Simplify right side
   2,099.82x = 3,522,759.62
5. Step 5: Solve for x
   x = 3,522,759.62/2,099.82
6. Step 6: Final answer
   x = 1,677.65