Finding the Fourth Proportional to 2,099.52, 2,897.02 and 1,215.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,099.52 : 2,897.02 = 1,215.15 : x
2. Step 2: Convert to fraction form
   2,099.52/2,897.02 = 1,215.15/x
3. Step 3: Cross multiply
   2,099.52x = 2,897.02 × 1,215.15
4. Step 4: Simplify right side
   2,099.52x = 3,520,313.85
5. Step 5: Solve for x
   x = 3,520,313.85/2,099.52
6. Step 6: Final answer
   x = 1,676.72