Finding the Fourth Proportional to 2,099.84, 2,897.34 and 1,215.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.84 : 2,897.34 = 1,215.59 : x
2. Step 2: Convert to fraction form
   2,099.84/2,897.34 = 1,215.59/x
3. Step 3: Cross multiply
   2,099.84x = 2,897.34 × 1,215.59
4. Step 4: Simplify right side
   2,099.84x = 3,521,977.53
5. Step 5: Solve for x
   x = 3,521,977.53/2,099.84
6. Step 6: Final answer
   x = 1,677.26